DC United trialist Carlos Varela is impressing caretaker coach Ben Olsen.

The 32-year old Spanish midfielder, who has spent his entire career in Switzerland, is training with the MLS club and Olsen has so far been happy with what the ex-FC Basel and Neuchatel Xamax man has produced.

"He looks good. He combines well, he has good pace," Olsen said.

DC will decide whether or not to sign Varela prior to the free agent transfer window closing in September 15.