"It's out of my hands," said Doyle, capped once at senior level. "It's up to Jack. If the club sell him, they sell him and if they don't, they don't - it's as simple as that.
"When I've come in, I've felt good.
"I do all the training and train every day. During the summer the club offered me a new one-year contract -- and I was happy to sign.
"But if you ask any player they want to play football. Jack is a fantastic goalkeeper, we'll just have to see what clubs are after.
"If Jack stays or goes I'll just have to wait and see and take it from there really.
"But if the club don't offer me a new contract, then obviously I'll have to move on.
"I like it here and my family love it here. My wife is from Birmingham and my kids were born in Birmingham, so it's a special place to me."