Kelsey, I've threaded this discussion in the past, and I can tell you it's an unpopular subject.
In my opinion, Howard, Cahill, Neville, Saha, and Distin are all nearing the end of their Everton careers.
Howard is a keeper, so can last a little longer than outfield players, but will eventually have to be replaced. With Mucha arriving, Howards biggest threat to his number 1 spot will be a spell out through injury as if Mucha excells, he might not regain that status.
Cahill will probably be rotated for a while, but he's 31 this year, so his place in a starting 11 with so many other options isn't guaranteed.
If he has a good World Cup, and attracts other offers, I'd be inclined to think both he and Moyes would have to consider them.
Neville can probably last a year or so as a holding midfielder, but no way can he last as a right back at the top level. He's 33, and has a natural successor in Rodwell climbing the ranks for the middle.
If we have a good transfer window in the summer, I expect Nev to spend next season with us as club captain, and as a squad player, but not in the first 11 unless we get injuries.
Distin is a decent defender, and gets a bit of stick, but probably because many here are bitten by the Heitinga / Jags bug. He wasn't my preferred purchase when he arrived, as at 34 this year, he was a quick fix and not a long term one, though I do recall our fans delight with him when they thought they had gotten one over on Lescott and City. He is our only left back cover of note, and still has pace, but not a long term prospect, so I would think his agents will try and get him one last move in the next window if both Yobo and Senderos stay.
Saha is a good goal scorer, but at 32 this year, I feel he'll be allowed to leave in the summer, or certainly January, if a good opportunity comes his way, especially if Yakubu raises the bar on current performances and we get another striker in, which I feel we must. He's a little inconsistent and injury prone (aren't they all), even this season, but has scored invaluable goals since arriving.
Moyes hasn't asked 26 year old Beckford to take a look at Everton simply to put him in the reserves, nor did he ask about Huntelaar and company because he didn't think we needed an additional striker.
Hibbert and Osman are both 29 this year ( Feb and May respectively ) so both still have plenty of tread on the tires yet, either for us or someone else, though they're our local lads so will probably stay out their career with us. Both are given unfair stick in my opinion, and both a lot better than given credit for.
We need experience in the squad, as well as youth, so finding the blend is key.
This year might be a fascinating year in the transfer market.
Who might be sold?
Who might come in?
Who might retire?
All good for a discussion if you ask me.