Guidetti has signed with Paul Martin, who counts the England captain among his clients.
"It is true that WMG Group has been granted our representation. Otherwise I have no other comment," Guidetti's father, Mike, told Fotbolldirekt.se.
"That said, it is WMG Group and Paul Martin who now represents (Guidetti). I have nothing further to say on the matter other than the confirmation I've already just given.
"In general John only wants to fully focus on playing football and Manchester City. It's the only way right now."
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