We've got to admit, we're pretty surprised by this!
The Belgian suffered medial ligament damage.
The former Arsenal player was his room-mate for away days.
Rangers boss Warburton has spoken highly of Rob Kiernan.
Ex-Nottingham Forest midfielder Guy Moussi will be in the crowd to watch their match against Watford in the FA Cup.
Derby County have taken just two points from their last five matches.
The Gunners have already seen a £3m bid for the defender rejected, according to reports.
The Irishman has admitted he could leave West Ham on loan.
Here is how Manchester City and Everton will line up in the Capital One Cup this evening.
The Greek international has headed to Fortuna Dusseldorf.