Mikel has failed to cement a first team spot at Stamford Bridge over the past few seasons and could be looking for regular football elsewhere.
Turkish club Galatasaray are keen on the Nigeria international and could make a big money bid in the coming weeks.
Mikel would link up with former Chelsea team mate Didier Drogba in Turkey as well as playing in midfield alongside Wesley Sneijder.
Chelsea are set to demand at least £18million for the 26 year old who is one of the few Chelsea players to have been at Stamford Bridge the last time Mourinho was in charge.
The new Blues boss will use the money generated from player sales to bring a world class striker to West London with Napoli hitman Edinson Cavani at the top of Mourinho’s wish list.
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