 Jónsson made his debut for Wolves playing the full 90 minutes against Birmingham in the FA Cup on 7 January, but this was one of only made five appearances in total during the remainder of the campaign during which the club suffered relegation.The player's first team prospects at Molineux failed to improve during Stale Solbakken's tenure as manager, with Jónsson only featuring in one league game as a substitute.To gain playing time he joined fellow Championship club Charlton Athletic on a one-month loan deal in November 2012.