Toure refused to be drawn into a prediction as to who would lift the trophy come May, but insists the managers' influence means a great deal in the latter stages of a season.
"The mental aspect will be the key factor now. Chelsea have Mourinho there," Toure told The Sun.
"Arsene Wenger's there with players who have a lot of experience of the English league and at the moment they want to prove it.
"There's also Liverpool and you shouldn't forget Tottenham. It's going to be close, very, very close."
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