This. If Arsenal don't want him, snap him up. Has been very good for West Ham this season.
There's not a lot of right backs in the Premier League that could be available in the summer IMO. Richards, is one. He has the added plus of being able to play centre back too, but is he the pacy right back that can get up the flank a la Clyne or Chambers? Then there's Raphael, who will probably leave United. Hasn't played much this season because of a broken cheekbone but still a good age and has good experience. Then there's poaching a near rival's right back. Janmaat from Newcastle for example.