The Republic of Ireland international has stepped up from his usual defensive duties into a midfield role for the past few games, which has impressed manager Alex McLeish.
Villa have recorded just one Premier League win from their last seven games and, following a drab Boxing Day goalless draw against Stoke at the Britannia Stadium, the 22 year-old has called on the squad to 'stick together' ahead of the game at Stamford Bridge.
He told the club's official website: "Our side's good enough to beat anyone in this league. All the lads know that.
"We can do it. We've just got to stick together and hopefully we can go down there and hopefully keep a good defensive shape like we did at Stoke and then we can go forward and hopefully create chances."
And reflecting on the thrilling 3-3 draw against the Blues when his last-gasp equaliser rescued a point for Villa back in January, he added: "I hope I get to play again at Chelsea on Saturday.
"I scored the equaliser in the last couple of minutes there last season and that would be one of my best moments for the club so far."