Celtic are interested in signing the Luton Town defender Jack Stacey this summer.
According to Daily Record, the 23-year-old full-back is a target for Neil Lennon following the departures of Boyata and Lustig.
Celtic are in desperate need of defensive reinforcements and Stacey could prove to be a quality addition.
The Luton defender is highly rated and he helped his side win the League One title last season.
Recently, his teammate James Justin sealed a move to Leicester City and it is believed that Stacey is in the same class.