Reading boss Steve Coppell is eyeing Standard Liege stopper Oguchi Onyewu.
Onyewu spent an unsuccessful loan at Newcastle last season and the USA international failed to land a permanent deal at St James' Park.
"We never conduct our business in public so I can't discus specific targets," said Royals chief Nicky Hammond. "But we're fully aware of what's going on and we're confident of brining in another couple of players soon."