The 25-year-old has spoken about promises he believes have been broken as he forces his way out of the club to join league champions Liverpool, whose £110M bid was rejected at the start of the month. Isak remains determined to join Liverpool despite not handing in a transfer request, and the saga looks to continue into the final week of the transfer window.
Isak's has behaved badly
Many pundits have weighed in on the situation and now it’s the turn of Rooney, speaking on his new BBC podcast, The Wayne Rooney Show as he held nothing back.
"if I'm a Newcastle player I don't want Isak back".
"I think if players leave football clubs - and that happens all the time - there's a way to go about it.
"You can't go on strike, can't not turn up for training and train with your team-mates. If you want to leave the club or not, you have to be there for your team-mates and be ready if needed."
Isak has refused to fly out on tour of the Far East, has been training alone and did not feature in last week’s opening game against Aston Villa. The 25 year old wants to win the Premier League and the Champions League, something he has little chance to do at Newcastle.
Isak's relationship is severed
Despite his ambition, Rooney believes he has acted poorly and has gone the wrong way about making a move away from The Magpies this summer. He thinks he won’t feature for the side again and that the trust between him and the team is severed.
"For me, I don't think there's any way back for Isak at Newcastle," Rooney added.
"I think there are cases where it can happen, but from me as a person, I don't think I could accept them back.
"In terms of Isak's team-mates I wouldn't want him back.
"You can ask to leave a football club - that happens, or the club tell you you're leaving - but you have to be professional.
"You've got friends in there who you play with, you have fans who are paying a lot of money to support and you can't just walk out on it. And if they're going to do it once, they'll do it again."