Surely the point here is that we have two needs:
1) A second LB to compete with and cover for Shorey (assuming Cech leaves)
2) A LCB who can step in if Jonas is unavailable. All of our other CB's are right sided and Tamas when he has deputised at LCB is not tje same player he is when he plays RCB
Ridgewell appears to tick both boxes and if he does play ahead of Shorey he would strengthen our aerial presence in defending set pieces.
I honestly don't believe that Hodgson wants to move Shorey on nor do I believe that he would want to drop down to the Championship when he could play for a Premiership club (in the top half of the table