I have been saying this all year, Ekotto looks a beast of a player in possession very very surprisingly strong, and never over commits to injure himself but s##t does happen and if ekotto gets injured we are screwed
Bale isnt a left back and playing him there would lose soo much of our attacking play, because other team will tell there wingers to play high up the pitch and hug the line so Bale cant venture forward, I wouldnt like to give that prick Nani a 50 yard run on anyone.
In terms of replacements/cover 2 players spring to mind problem is they may turn out better than Ekotto, first is leighton Baines reckon he would cost 10mil, better than ekotto going forward and positionally better, although ekotto is more physical, and then Jose Enrique of Newcastle I would say he would cost 6mil, I really like him similar to Ekotto but technically in terms of passing the ball is much better.
I guess Gallas who played at left back for Chelski and Basson who played there for Newcastle in his first season could do a job there...... I would worry about Gallas there due to lack of pace, but Bassong is quick and left footed, the thing that lets him down is he isnt technically great but worth a try!!