By Wilton Jackson The 76ers big man’s lingering injury isn’t expected to keep him out of Game 4 vs. the Raptors. 76ers star Joel Embiid is expected to play in Game 4 against the Raptors on Saturday despite a lingering thumb injury. However, before the game, Philadelphia coach Doc Rivers told reporters that his star big man’s injury is not ideal. Rivers could not say if Embiid had a torn ligament in this thumb. “I’m not sure [about torn ligament] but we feel like it’s not a great injury,” Rivers said. “I’m just going to leave it at that.” “I think we know … to be honest … but we have to make su…