Everton boss David Moyes admits his current squad is facing an overhaul.
With several key players approaching or past their 30th birthday, Moyes is aware things must change soon, even if he does not believe a large-scale cull is needed.
"It comes to an end for everybody somewhere along the line. Recently though, the hardest part has been seeing people I would like to replace and not being able to.
"I always look back to the likes of Jags and Baines. Even they took six months to settle in. So we could do with getting players in, letting the older players continue and gradually phasing in the replacement.
"But that's the hard bit, because those younger players are costing an awful lot of money.
"There is a big price to pay. I mean, what would a Jagielka or a Baines cost now if we were going to Sheffield United or Wigan?
"We couldn't afford a player of that standard now."He said: "The time will come, unfortunately, when we will need a big rebuilding job. But hopefully these boys can keep playing, and it doesn't all come at once. But that is why we have to keep adding younger players to the squad, so that as one drops off we have another one coming through.