Chelsea star Antonio Rudiger could leave the club to become the world's highest-paid defender, with Juventus and Bayern Munich interested.
The Germany international is in the final year of his contract and is yet to agree terms with the Blues.
Rudiger is regarded as Chelsea's standout defender and seeing him walk away for free would sting manager Thomas Tuchel.
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It has been reported by The Mirror that Rudiger would command up to £400,000-per-week with any move.
Bayern and Juventus have signed a number of players on free transfers in recent years and it's proved to be successful for the former.
Julian Nagelsmann has spoken fondly of Rudiger in recent weeks and the Bayern manager added fuel to the fire regarding a move.
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"I'm generally not a big fan of talking about players who are under contract elsewhere, and besides, we're outside the transfer period," he stated per talkSPORT.
"I'm talking about him now as a football fan because he is a German senior international.
"He has made a super development. Thomas [Tuchel] has handled him extremely well - he was still on the sidelines at Chelsea a year ago and is now certainly one of their most decisive players."
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Rudiger has become a key player at Stamford Bridge after being frozen out by former manager Frank Lampard.
He helped the Blues to Champions League glory last campaign and has started eights games this season.
Chelsea have offered Rudiger a new £130,000-per-week deal, but that is significantly lower than highest earner Romelu Lukaku's pay packet.
Lukaku takes home £325,000-per-week and it's thought Rudiger wants to be closer to that margin.
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Saturday saw Chelsea suffer their first defeat of the season to Manchester City.
Gabriel Jesus' second half strike was the difference and Tuchel believes his side didn't do enough going forward.
"We lost the game and City deserved to win," he told Chelsea's official website.
"For 60 minutes, until the goal, we were very strong in the last [defensive] 20 metres of the field but only there unfortunately. The other 80 metres, we were not good enough.
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"We were never on our highest level. You cannot expect to get a result. It could turn around maybe with one header but we have to accept it was not our best game.
"We did not have ball possession to hurt them, to grow in confidence. It never happened in the first half or the second half. Until the goal, we defended the box very well but the performance was not complex enough.
"We were not on our very best level and you need the best level to push the game against this side."
Topics: Chelsea, Football, Transfers, Antonio Rudiger