The 21-year old American centre-forward joined the Rams in 2010 but has failed to force his way into the first team at Pride Park.
"Conor is training full time with Colorado Rapids, which is good," Clough told the Daily Telegraph.
"A six-month loan spell would do him the world of good. We just want to get him playing some games.
"If not in America, we will try and get him fixed up in England."