Hughes made eighteen (plus two sub) league and cup starts for the Sky Blues last season but announced his retirement after not being awarded a contract at the Ricoh Arena or anywhere else.
Hughes has 71 caps for Northern Ireland and is currently working for BBC Radio Ulster as a match summariser and he told BBC Northern Ireland Sport, just before Northern Ireland's World Cup qualifier with San Marino in Serraville kicked off: "I retired a bit early and I'm missing it.
"I'm looking at getting myself fit and finding a club at any level."
Former Sky Blue keeper Jonny Tuffey was not named as a substitute for the game which Northern Ireland won 3-0.
Craig Bellamy played for Wales in a 1-0 defeat by Poland.