Irish international captain Kenny Cunningham has cast doubt on his future by revealing that he is uncertain he can stand up to the rigours of two more seasons of Premiership football.
Birmingham boss Steve Bruce wants 33-year-old Cunningham to continue playing and hopes that the central defender will sign a new contract with the Blues when his current contract runs out next summer.
But Cunningham is more cautious about how long he can continue and will assess how he feels physically before making any decision.
He said: "That (a new contract) is news to me. I haven't spoken to the manager. I haven't really given it any thought. I've just over a year left of my current contract and I'll see that out.
"I've enjoyed my time at this club but I'm not going to look too far ahead. You don't look that far ahead when you are 33. You just look to the next game and that's all I will be doing."
As for Bruce's belief his captain can play on for at least two more years, Cunningham admitted: "I'm not sure. It is an easy thing to say but when get to that age 33, 34, it is difficult to envisage two years down the road.
"In terms of your physical condition, it can change very quickly. That two years from 33 to 35-36 is significantly different from 25 to 28 in terms of your physical condition. It can deteriorate very quickly.
"It's sensible not too look to far ahead and it's something that doesn't really trouble me to be honest," he added.
