Leyton Orient boss Russell Slade believes on-loan winger Lee Cook will improve as he plays more games at the League Two club.
Cook joined the Os last month from QPR, where he had played just 82 minutes of first-team football in 2011, and has so far made two appearances against Sheffield Wednesday and in the FA Cup defeat by Gillingham last week.
"Cooky needs game time and he looked sharper (against Gillingham) than he looked against Sheffield Wednesday," said Slade.
"He will get stronger and better the more games he plays. He has got good quick feet and is a good crosser of the ball and I'm sure that will come through for us."
Cook is set to be in the starting line-up when Exeter visit Brisbane Road this weekend.