 On 12 October 2010, Grella joined Carlisle United on a month's loan to gain some more first team experience and gain regular football.He joined fellow Leeds loanee Ľubo Michalík who was already at the club.Grella made his debut as a second-half substitute against Exeter City, he started the next game against Charlton, and scored his first goal for Carlisle against Charlton Athletic.