August 2013United were under a new manager in David Moyes and Amos was enjoying the challenge of battling for a first-team spot. "It’s an exciting time to be in the squad," he explained. "Everyone’s fighting for their places and places are up for grabs." He played two matches for the Under-21s as an overage player, keeping a clean sheet during the 4-0 win against West Brom.
Amos managed two more shutouts, first against Bolton as the Reserves booked a place in the final of the Manchester Senior Cup and then against Everton in the Barclays Under-21 Premier League.
Amos moved on loan to Carlisle in the middle of the month and made his debut in a 1-1 draw against Crawley. In his next game he kept a clean sheet in a goalless encounter with Rotherham and featured twice more in the league in November.
At the start of the month, United agreed to extend Ben’s loan deal at Carlisle by a further a month. FA regulations prevented Amos from playing in the FA Cup second-round tie against Brentford, but he went on to play in every other game for Carlisle during December.