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Now we finally know why Yaya Touré hasn't been Yaya Touré—he's unhappy.
Talk about a 180 because three months ago, he wanted to retire at Manchester City (per David Clayton at MCFC.co.uk).
- 174 Premier League players average more tackles per league game (1.2) than Yaya (1.1). How can he be box-to-box when he doesn't even defend at an elite level?
- Some of his positioning throughout the season has been horrible. That is why he averages more fouls (1.5) than tackles made (1.1).
- His 10.2 shots per league goal is wasteful.
- 28 EPL players average more dribbles per league game (1.2) than Touré (1.1).
- The Ivorian picked up more yellow cards (three) than goals scored and created (two) in the UEFA Champions League.
- Does he deserve a new contract? Hell no!
Just like most of the City players, he has rested on his laurels this season.
Could burnout be another factor in Yaya underperforming this season?
Antony Kastrinakis at The Sun published comments from Dimitri Seluk, Yaya's agent, which stated that the Ivorian footballer's relationship with Manchester City is broken.
For those who are questioning Kastrinakis' credibility, this isn't an article based on unsubstantiated speculation, he's reprinting Seluk's belief  that City don't value Yaya.
The Telegraph, Sky Sports' Graeme Bailey and Jamie Jackson at The Guardian have also published articles based on The Sun's original findings, which gives Kastrinakis' quotes more validity.
Regarding the part where Kastrinakis says: "They [Yaya and Seluk] speak in Russian, Seluk’s native tongue which Yaya speaks fluently," as incredulous as that seems, Touré does speak Russian.
Just ask former Barça teammate Dmytro Chygrynskiy (via BFB):
Q. Furthermore, Yaya Toure is able to speak fluent Russian….
A. Yes (laughs), he speaks pretty well, but I just want to learn to speak Castilian as quickly as I can. So I don’t talk to him in Russian. I prefer that all speak in Castilian to learn better.
So, since Touré can communicate in Russian, it makes a rumoured move to Anzhi Makhachkala (from Simon Jones at The Daily Mail) plausible.
 It could all be smoke and mirrors since Seluk loves to run his mouth off, which leads to media exposure therefore increasing his profile.
(Via ESPN FC; May 16, 2012):
Touré could sign for many big clubs like Chelsea and Bayern Munich. We would like to see Barça join the race. He has done all he can do at City and he needs new motivations.
(Per The Sun; November 1, 2010):
Yaya thinks there are some [City] players, perhaps mostly those who have been there for a long time, who think that fourth place is already a big position that it is good enough to ‘not lose’ rather than to always win
(From RAC-1 via Michael Wade at goal.com; June 8, 2010):
Everything has changed with City, because they talk a lot but then afterwards they don't appear to be a rich club but rather a bankrupt one.
(By RAC-1 from ESPN FC; November 11, 2009):
If Barcelona do not like Yaya there are eight clubs, the most important in the world, who are interested in signing him. If he leaves Barça, he will not go to Manchester City. He would sign for a more important club.