It has been well reported that Ireland is on £85,000 a week. On a purely financial basis, I would say the following are replaceable for the money they are on (rough estimates):
Given - £60,000 pw
Hutton - £30,000 pw
Warnock - £40,000 pw
Dunne - £50,000 pw
Makoun - £40,000 pw
Ireland - £85,000 pw
Bent - £80,000 pw
That's the best part of £400,000 per week that isn't even featuring at the moment.