Roma have found their second-choice goal-keeper behind Rui Patricio in the form of 22-year-old Mile Svilar of Benfica.
According to Fabrizio Romano of Sky Sport, Svilar has completed his medical with the capital club.
The Belgian international is ready to sign a 5-year contract until 2027.
The shot-stopper will finish the season with Benfica and join Roma in June as a free agent.