William Gallas has said Graham Potter "baffles" him for using Raheem Sterling as a left wing-back for Chelsea against Red Bull Salzburg two weeks ago.
The 1-1 draw at Stamford Bridge in the second Champions League group match is the only game Potter has had in charge of the Blues since being appointed head coach earlier in the month. In the match, many were surprised to see Sterling lining up as a left wing-back.
The England international did, however, score the only goal of the game for Chelsea in west London. Sterling was able to find plenty of space out on the left and was not asked to track back as much as a normal wing-back would.
