The two are spending a week on trial with the Imps in a bid to impress the
Central defender, Mordey joined the Premiership club at the tender age of 13 and was a regular in their Under 19's last season.
Lacey is a right-winger who got his chance with the Black Cats having been spotted playing for Irish team Bohemians. He has been a regular for both their Under-17s and Under-19s.
Lacey netted on 55 minutes to give the Imps reserves a 1-0 lead against