"Of course, Griezmann will be able to leave at some point, the same way Costa and Arda Turan were allowed to leave".
The 26-year-old came close to joining Manchester United over the summer but opted against a move due to a transfer ban imposed on Atletico Madrid. The similarities continue, with Fergie telling Ronaldo to stay for one more season and then he could leave.
"I'm not a big defender of the January market but there are players and situations that sometimes you have the chance to do [something] and you shouldn't lose that chance", Mourinho said.
And, amid news Barcelona had taken a giant step towards Griezmann's signing, Real Madrid players supposedly did not receive the information well.
One way or another it looks clear that the France worldwide will remain at the new Wanda Metropolitano stadium until the end of the season.
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Simeone said he would not deny the chance to leave to any of his players if they wanted to continue their growth somewhere else.
That deal would make him the third most-expensive player of all time, behind Neymar and Ousmane Dembele.
He added: 'I know that he needs to grow. If he gave his all for me as Griezmann does, I'll say it's no problem. Atletico's will score five or six. At Atletico - or in the teams I consider weaker than Real, PSG, Bayern and Barca - the attackers must put in extra work to compete. Their defensive work will be less important as they are sharp in the penalty area.