The Portuguese youngster made two starts and two substitute appearances for the Robins after being handed his debut at Shrewsbury Town on October 11, when he set up Byron Harrison's goal in the 3-1 defeat.
Meanwhile, Millwall loan striker John Marquis has been cleared to play in the FA Cup for Cheltenham against Swindon Town in Saturday's first round tie at Whaddon Road.
Marquis, 22, has made nine starts and four substitute appearances for the Robins, scoring twice. His loan stay will end on November 26.