The Brazilian was making just his fourth appearance for the club since his €41million summer switch from Bordeaux.
The 21-year-old has endured a difficult start to his Camp Nou career with talk he could even leave the club on loan in January.
However, he served notice of what he can offer after rising from the bench to open the scoring in the Champions League clash at the San Siro.
“[Playing for] Barcelona was a dream I had as a kid,” he said. “Making my debut in the Champions League and scoring will stay in my memory forever – I will celebrate it with my family tonight.
“My dream with Barca is just starting. My dream is to make history and to do big things. I have to thank my teammates for showing confidence in me.”
Malcom is hoping the goal will now be used as a platform for more minutes having made three of his four appearances from the bench.
“I want to play more,” he said. “Every day I train to show the quality I can add to the team. Nothing in my life has been easy.”
Barca are next in action on Sunday when they host Real Betis in La Liga.
Malcom has endured a nightmare start to his Blaugrana career following his summer switch from Bordeaux.
The €41million signing was making just his fourth appearance for the club after rising from the bench at the San Siro on Tuesday evening.
It was his first game since a poor outing in the 1-0 Copa del Rey outing against Cultural Leonesa, however, Busquets has praised the attacker’s attitude.
“It’s not fair that he’s judged on one game in the cup because he had hardly played all season before that,” Busquets said. “It’s impossible to have any sort of rhythm [when you aren’t playing regularly]. There was a lot of unjust [criticism] about the players that played in the cup.
“We’re all happy for Malcom. His tears were emotional. He’s not getting the minutes he wants, but in training he’s working really hard. He really wants to turn things around.
“He’s a great kid. He’s done really well and the goal will do him good. He is going to help us a lot.”
Barcelona were held to a 1-1 draw despite a dominating performance against Inter Milan in a rain-soaked San Siro.
Malcom gave Barca a deserved opener after several close calls in the latter stages, but Inter grabbed an unmerited leveller through Mauro Icardi with their first shot on target.
The game yielded plenty of food for thought – especially considering the identity of Barca’s goalscorer.
MALCOM MAKES HIS MARK
Malcom vs Inter— FootballTalentScout (@FTalentScout) November 6, 2018
81' comes on ➡️
83' goal ⚽️
He needed that one so much! pic.twitter.com/ZHNkze2Yjl
With Lionel Messi still out of action in the latter stages of his recovery from a fractured arm, the captain’s absence on the right wing gave Ousmane Dembele another chance to prove his worth.
The former Borussia Dortmund youngster didn’t really take his opportunity, though, producing another intensely frustrating performance that combined occasional flashes of excellence with more poor decisions and wasteful deliveries.
In the end, head coach Ernesto Valverde decided to freshen things up by introducing summer signing Malcom, who has been in danger of becoming frozen out after not starting a game all season.
Remarkably, Malcom immediately thrust himself to the forefront of Valverde’s consciousness by netting a well-taken opener. And although he didn’t spend enough time on the pitch to show whether that was a freak occurrence or a representative indication of his abilities, his goalscoring contribution is sure to open the debate over whether he should now leap ahead of Dembele in the Barca pecking order.
Messi will probably be back in action for Sunday’s league meeting with Real Betis, so the starting XI will look after itself. But the first bench option is very much up for grabs, and Malcom has finally become a part of that equation.
BARCA FLEX THEIR MUSCLE
The season started with Messi publicly asserting in an unusually forthright manner that Barca were furiously focused on regaining the Champions League title for the first time since 2015, and everything they have done so far in the competition shows the captain’s words should not be taken lightly.
Almost without exception, Barca have reserved their best performances of the season for the Champions League, making light work of an apparently tough group to leave themselves on the brink of qualification with two games spare.
And after conceding a chance to Inter in the opening 30 seconds, they immediately settled into a highly impressive performance. From front to back, Barca looked compact, organised and well coordinated, comfortably smothering Inter’s attempted attacks and always posing problems in possession – and this, remember, was without Messi.
They should have been well ahead before half-time, with Luis Suarez going close on no less than four occasions as Inter’s defence was stretched to the maximum. When Malcom finally pounced to give his team the lead it looked like a well-deserved victory and, although Inter somehow snatched a point, a total of 26 efforts on goal told its own story for the dominant visitors.
LENGLET POSES A PROBLEM
Barca boss Ernesto Valverde has been forced to cope without the services of World Cup-winning central defender Samuel Umtiti for the last few weeks, and at first that appeared to present a problem because the powerful Frenchman was undoubtedly one of the key factors behind Barca’s title triumph last season.
However, the ease with which Clement Lenglet has settled into the team has more than compensated for Umtiti’s absence, and given Valverde a selection dilemma when Umtiti returns to action in the next few weeks.
Lenglet, a summer signing from Sevilla, has looked calm and composed throughout his nine-game stint in the team, playing with a mature assurance which belies his lack of experience at the highest level.
On this occasion the 23 year-old former Nancy player was up against one of the game’s most highly rated forwards in the form of Mauro Icardi, but the Argentine international was kept extremely quiet by Lenglet’s intelligent positioning and sharp anticipation.
And although he will probably lose his place in the starting side when Umtiti returns to fitness, on current form he is not making that decision easy for Valverde.