Except Sarkic has a near full season in the champ and did really well by all accounts, about as good as you will get as a backup keeper in my eyes.
Don’t disagree with your general comment about doing really well and being a good back up keeper, however just for clarification… Sarkic played 23 league games for Blues so the ‘near full season’ was actually half a season
My only concern with him is his shoulder… that’s the second time he’s injured it to my knowledge so hope there isn’t a long term weakness there