The Birmingham City goalkeeper's contract with The Blues expires in the summer and the Irish U-21 international is keen on making a move to The Lions.
And for their part, Millwall would welcome the move. As one of the big earners at the club, current first choice keeper Andy Marshall is expected to leave once relegation to League One has been confirmed and The Lions would prefer to sign a replacement sooner rather than later.
When asked if he'd like to make his stat at The Den more permanent, Doyle replied: "Yes - definitely. My contract is up at Birmingham - and who knows what is going to happen with that.
"We'll just have to wait and see, but I could be back at Millwall next season."