I would go for a quick, reliable CB to replace Hyypia
There isn't many CB's that are quick.
a GK that won't make stupid errors,
Another GK isn't needed, over the past ten years all of our GK's have been dodgy.
and a striker who is happy to sit on the bench yet still score 10-15 goals a season as a sub/cover.
There isn't a striker in the world who would be happy sitting on the bench and scoring 15 goals a season as a sub.