Garnacho was in the starting lineup for Manchester United on Sunday, when the Red Devils were beaten 3-0 by visiting Liverpool. When the 20-year-old was taken off at the 69th-minute, Parker wasn't impressed by Garnacho's demeanour towards manager Erik ten Hag.

It's indicative of a possible larger issue, said Parker.

"With Garnacho you're not sure what you're going to get," he told bettingexpert.com. "He comes off and he doesn't even look at his manager. He just kind of walks past as if he’s asking the question as to why he was subbed off.

"He's a young player. He shouldn't be doing that. Go and knock on the manager's door the next day and ask questions. But remember who you are. Remember where you are.

"You don't do that. You don't do that. Remember how old you are as well.”

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