Zogbia is worth sticking with, he's only been here a season, and PL might be able to get the best out of him. That being said, i only ever saw flashes of quality when he was at Wigan, so i don't know whether we're waiting for consistent performances, that just aint going to come.
As for Ireland, his attitude is questionable, most of the time he just looks like he could take it or leave it, minimal effort, doesnt do enough off the ball, and becomes a passenger, although improved a little towards the end of last season, although thats not difficult as he's done nothing since he joined. He needs to improve big time, or i'd get rid, and i'd consider doing so this summer if a decent offer comes in, chance to rid us of his massive wages, which i think could be better spent elsewhere.