The club have reportedly delayed offering the midfielder a new contract, with his current one set to expire next summer – which means he is free to negotiate with European clubs in the January window.
Herrera has previously stated his desire to stay at Old Trafford, where he is a fan favourite, but the club’s inaction over a new contract has allegedly left him disappointed.
It’s not clear whether the club are having doubts over whether to offer the Spaniard a new contract at all, or if they are simply biding their time.