Two days after signing the contract, Arca came on as a substitute in an away league match at Leeds United and passed to Marvin Emnes to score the only goal of the game. He continued to remain involved in the first team in a number of matches since returning to the club, mostly coming on from the substitute bench. But at times, Arca was given starts in the first team in a number of matches. In a match against Cardiff City on 17 December 2011, he set up a goal for Faris Haroun (who scored earlier in the game) to score the winning goal, in a 3–2 win. In a 3–1 loss against Coventry City on 21 January 2012, Arca was sent–off at the last minute of the game for a foul on Sammy Clingan. After serving three matches, he returned to the first team in the starting line-up, in a 2–1 win over Nottingham Forest on 14 February 2012. In a follow–up against Millwall, Arca set up a goal for Curtis Main to score the third goal of the game, in a 3–1 win. Despite being sidelined during the 2011–12 season, Arca finished the season, making thirty–three appearances in all competitions.