Yaya Toure
Toure is reportedly unhappy with Manchester City's hierarchyReuters

Ivorian midfielder Yaya Toure has put his Manchester City future in further doubt by saying he agrees with his agent Dimitri Seluk's comments about him being unhappy due to the lack of respect shown by the club's owners on his 31st birthday.

Seluk had earlier stated that Toure was very upset and was pondering leaving City this summer. Initially the Ivorian played down the seriousness of Seluk's comments on Twitter, saying: "Don't take words that do not come from my mouth seriously."

Later, though, Toure tweeted, "Everything Dimitri said is true. He speaks for me. I will explain after the World Cup."

Although City gave the former Barcelona man a birthday cake and posted their regards via the club's official Twitter handle, Seluk claims Toure was ignored by the club's hierarchy when the squad arrived in the United Arab Emirates to celebrate their Premier League triumph.

"None of them shook his hand on his birthday. It's really sick," BBC quoted Seluk as saying.

Seluk also made a reference to the time when Brazilian defender Roberto Carlos was given a Bugatti Veyron on his birthday by the president of Russian club Anzhi Makhachkala

"He [Toure] got a cake but when it was Roberto Carlos's birthday, the president of Anzhi gave him a Bugatti. I don't expect City to present Yaya with a Bugatti, we only asked that they shook his hand and said 'we congratulate you'. It is the minimum they must do when it is his birthday and the squad is all together," added Seluk.

Roberto Carlos' agent Paulo Teixeira, however, said he failed to understand why Seluk chose to refer to his client's 2011 birthday gift.

"I don't see why this is coming out. It's nothing to do with the contract of the player. Toure has got enough money to buy 10 or 20 Bugattis. This is about egos," he said.

"If Yaya's agent comes out with this, it's because he understands his player, what his player needs and maybe he's trying to make the management of the club do something for the player. But I don't know why they're picking up on this, it's almost to the limit of being ridiculous."