After spending his rookie season on the practice squad and being held to one reception in his first four games this year, Fuller has hauled in eight passes the past three contests, including the game-winner against the Saints.
With Eric Ebron and Joseph Fauria already rules out, and Brandon Pettigrew and Reggie Bush doubtful for Sunday's contest against the Falcons, the Lions offense will be hurting, whether Calvin Johnson can go or not.
Lombardi suggested an offensive lineman could play in some blocking situations, while fullback Jed Collins and the receivers could fulfill the pass-catching responsibilities out of the tight end position.
Johnson has missed the past two weeks with a high ankle sprain, and has been dealing with the injury for more than a month. He's expected to test out the ankle again Sunday morning at Wembley Stadium, and be a game-time decision.