The former Liverpool, Tranmere and Hull goalkeeper is currently playing for Bundesliga table toppers RB Leipzig.
The former Rangers man believes players like Joe Garner and Michael O'Halloran are struggling.
The German has Liverpool challenging for the Premier League title this season.
Newcastle United visit Hull City in a quarter-final League Cup clash tonight.
West Ham United are currently just a point outside the relegation zone.
Swansea City picked up their first win under Bob Bradley on the weekend and the fashion in which they did it will give them confidence going forward.
Leeds should move for Leicester's Polish international Bartosz Kapustka.
Newcastle United still sit top of the Championship table, despite losing on Saturday.
Queens Park Rangers were beaten 2-0 by Ipswich Town at the weekend.
The Blades loanee is reportedly on the radar of parent club Wolves' new boss Paul Lambert.
Arsène Wenger plans to offer Jack Wilshere a contract extension around the new year.
Unless the rest of his life is one enormous bluff, it is safe to assume Diego Costa is not a particularly successful poker player. It is never hard to know what he is thinking: he is an open book whether he is scowling in anger, scowling in frustration, scowling in irritation or, as has increasingly been the case recently, scowling cheerily.