Going into the 2011–12 season, Ulster and Ferris shone on the European stage with the Irish side putting in a memorable 41–7 win over Leicester at Ravenhill during the Heineken Cup group stages. Despite injury, Ferris performed valiantly earning man of the match honours during Ulster's Heineken cup quarter final victory over Munster. Due to his strong performances Ferris was nominated for the ERC European Player of the Year 2012. Ulster ended up losing to Leinster in the 2012 Heineken Cup Final, 42–14. Ferris last played against Edinburgh in November 2012, due to an ankle injury he sustained. This injury prevented a potentially lucrative move to Japan. He remained at Ulster on a short term contract as he underwent rehabilitation, before returning against the Scarlets on the 14 March 2014 where he came off the bench to a standing ovation after a 15-month absence. Ulster went on to win the Scarlets match 26–13. Unfortunately, the injury recurred forcing Ferris' retirement in June 2014, aged 28.