The Philadelphia Inquirer reports that Allen was held out of the preseason opener due to a lingering knee injury. The Temple-product is with the team in Spain and is expected to play Tuesday night in England against the Oklahoma City Thunder.
Allen, 24, averaged 5.8 points and 5.0 rebounds in 79 games (37 starts) for the 76ers last season. In two seasons with the Sixers, the former-Owl is 5.2 points and 4.7 rebounds in 19.1 minutes per game.
Follow Steve on Twitter @SDolan3
Follow Whiz Wit on Twitter @WhizWitSports