TORONTO -- Jonas Valanciunas could see action Monday night against the Cleveland Cavaliers.

Raptors coach Dwane Casey said the Toronto big man, who has been out with an ankle injury, took part in the morning shootaround and would go through warmups prior to Game 4 of the Eastern Conference finals.

"That will determine (it)," Casey said prior to the game. "If he does (play), it is going to be limited. We're not going to put him out there and run him long minutes at a time. He's been off for a long period of time, so we'll slowly reintegrate him back in -- if he does go, if he can go."

Valanciunas badly sprained his ankle in Game 3 of the Eastern Conference semifinals versus Miami.

The Raptors go into Monday's game trailing the Cavaliers two games to one. Game 5 foes Wednesday in Cleveland.

Casey said he expects the Cavaliers to test Valanciunas if he plays.

The Raptors upgraded Valanciunas's status from "doubtful" to "questionable" before Monday's game.

The 24-year-old from Lithuania was playing some of the best basketball of his career this post-season, averaging 15 points, 12.1 rebounds and 1.4 blocks in 10 games, and Raptors GM Masai Ujiri said recently Valanciunas would be the best big man in this series "by far."

Bismack Biyombo has stepped up admirably in Valanciunas's absence, grabbing 26 rebounds in the Raptors' Game 3 win.