With a lack of interest from suitable buyers he found himself seeing the season out in the sidelines, only making one appearance in the 2014 campaign in an FA Cup game against Sheffield United F.C where he also scored his only goal for Aston Villa. Helenius' agent revealed in May 2014, that Helenius was not a part of Aston Villa's future plans and therefore had to leave the club. Helenius revealed that a reason behind his struggles were a bacterial infection and an addiction to sleeping pills. Helenius had many clubs interested, like IFK Göteborg and AaB. Aston Villa also rejected a bid from IFK Göteborg. Loan to AaB On 9 July 2014, Helenius returned to his previous club AaB on a season long loan deal. He was very happy to be back and expected a turbulent season with a two-digit number of goals. He had a good season with 14 goals in 43 games and he was set to make the transfer permanent, as Aston Villa did not want to keep him. Return to AaB Helenius joined AaB on a permanent transfer in July 2015. But in this season, opposite the last season, Helenius was the fourth choice and did not get much time on the pitch. A situation, that Helenius was not happy with, and he announced, that he would like to go out on loan. Loan to SC Paderborn 07 On 1 February 2016, it was confirmed that Helenius would play for SC Paderborn on loan from AaB. He played his first game for Paderborn on 5 February 2016 in a 1–0 loss against SV Sandhausen. Helenius got some playing time, and scored 4 league goals in 14 games. Back to AaB Helenius played the first three season games for AaB, one from start and two from the bench. However, he was sent out on loan once again. His contract would expire in the summer 2017 and Helenius announced, that he would not be extending it. So he would be leaving the club after he was back from loan. Loan to Silkeborg IF On 10 August 2016, it was confirmed, that Helenius was loaned out to Silkeborg IF for the whole season. He played 29 league games and scored 10 goals in this season. OB On 30 January 2017, it was confirmed that OB had signed Helenius from AaB, but first valid from when his contract expired