#1 Riyad Mahrez (Leicester City)

Perhaps the most obvious choice, Mahrez came closest to signing for another club during the transfer window, but his move to Manchester City failed on the last day.
Guardiola fancied the Algerian as a fast replacement for the injured winger Leroy Sane and Mahrez's performances this season merited a move as well.
His form so far this campaign been brilliant as the silky winger of Leicester's amazing 2016 league win has returned and he's linked up superbly with Jamie Vardy up front.
Mahrez has been understandably frustrated at the transfer falling through as he's at the right age to make the move to a bigger club, something which has been discussed for a few seasons now.
While a different player in style to Sane, the expectation was that Mahrez would have brought a different but equally devastating form of play to Manchester City's team, utilizing his trickery and dribbling ability on a larger stage.
Playing in a team dominating most of their opponents would have been a dream for an attacking talent like Mahrez. It seems like the winger has gone as far as he possibly could with Leicester and it's only fair that he gets the opportunity to try his luck elsewhere.