"Paul Jones is at the wrong end of his career and the next generation - Lewis and Jason - have got to start to come through," said Fulham keeper Crossley, enjoying a successful loan spell at Sheffield Wednesday.
"As for me, I'm going strong, feeling great, and I'm keen to keep enjoying myself and playing for as long as I can - I'll give up when nobody wants me anymore!
"I'm also taking my coaching badges, so I hope that I can stay in the game at some level after I retire."