Yaya Toure
Yaya Toure has been a key part of Manchester City's success in recent seasons. Reuters

Manchester City midfielder Yaya Toure has remained non-committal about his future after his agent claimed he would walk away this summer if he wasn’t offered a new contract.

Toure, whose current deal is set to expire in 2015, has been linked with a host of clubs in recent days, including Chelsea, Paris Saint-Germain and Real Madrid.

Despite being on a reported £250,000 a week at City, Toure’s representative, Dimitri Seluk, said that the player did not feel respected at the club and would leave if a new contract wasn’t forthcoming.

Toure did not elaborate on those remarks but denied that he had already spoken with PSG.

"No, I did not head to PSG," Toure told Sport-Ivoire. "You know that with the approach of the transfer window, there are many things that are said in the newspapers. "We are professional and so far I have not given any agreement with any club. I am for the moment a City player and I will fight so that we finished the season in good conditions.”

However, he did suggest that he was less than happy with elements of his treatment at City.

"In a club there are players and administrators," he added. "We are like soldiers and we carry out what employers say."

Chelsea are currently short in central midfield and are likely to strengthen that area of the team this summer, particularly with Frank Lampard out of contract. A move for Toure would make sense, although City will doubtless be hugely reluctant to lose the influential 29-year-old to a Premier League rival.

Another player recently reported to be unhappy at his current club is Zenit St Petersburg forward Hulk. But despite speculation claiming that Chelsea could reignite their long-standing interest in the Brazil international, Hulk has said that he has no plans to leave the Russian club.

“I am satisfied with my career at Zenit,” he said, according to Metro. “I’m giving my best to the shirt and I have no intention of leaving Russia.

“I have a long contract and what happened in the past is now gone.”

Hulk was strongly linked with Chelsea last summer, but Zenit were the only club to pay Porto’s huge valuation of over £30 million. Earlier in the season Hulk had a public falling out with coach Luciano Spalletti.

Meanwhile, young Southampton left-back Luke Shaw has again revealed his fondness for Chelsea to fans on Twitter, sparking further speculation that he could be set for a move to Stamford Bridge.

The 17-year-old has been a regular in the Premier League this season and has also been linked to Arsenal. However, it appears that the England Under-21 international would prefer a move to Chelsea, naming them as his favorite team -- apart from Southampton -- and Ashley Cole as the best player he has swapped shirts with this season. Shaw is believed to be seen by Chelsea as a potential long-term replacement for 32-year-old Cole.

There have also been reports that Chelsea are interested in another 17-year-old -- Birmingham City’s Koby Arthur. The Daily Mirror states that a host of Premier League clubs are monitoring the forward, who has yet to be tied down to a professional contract with the Championship side.

Arthur, who only arrived in Britain from Ghana a year ago, would be available for minimal compensation if Birmingham cannot persuade him to sign a contract.