 Following his release from Brentford, Bury completed the signing of Grella on a short-term contract until the end of the 2011/2012 season on 27 February 2012.One day after signing for the club on 28 February 2012, Grella made his debut for the club in a 2-1 loss against Hartlepool United.On 10 March 2012, Grella provided assist for Giles Coke to score against Carlisle United to take a lead, only to lose 4-1.