The Blues are reportedly looking at the possibility of offering Mason Mount to Atletico as a swap deal for Felix. The Portuguese has been in fantastic form for Chelsea since he arrived at the club during the 2023 January transfer window.
Mount has not found his feet since the start of this season ( 2022/23) and a move to La Liga might be a win for both parties. If Chelsea wants to sign the midfielder without including any player in the deal, they might pay at least £120 million for the player.