He was last with Iranian club Tractor. The 24-year-old netted four goals in seven appearances, but didn’t play beyond November last season.
Now back in familiar surroundings, Erwin has made his return to the SPFL.
Will it be third time lucky for him though?
Erwin needs to make this Premiership shot count
The problem Erwin has had is that whenever he picks up form in this league, he jumps at the first opportunity he gets from it.
Erwin broke through at Motherwell, netting five goals and notching six assists in 34 games during the 14/15 campaign. Only one of those goals and two of those assists came before April.
After a poor season up until that point, Erwin kicked on to help Motherwell survive via the relegation play-off that term. He should have stayed at Fir Park to play another full season, but instead, he took the opportunity to join Leeds United.
That worked in the short-term, but for his long-term career goals, it was detrimental to what he wanted to achieve.
After loan spells away from Elland Road to Bury and Oldham, Erwin was back in the Premiership with Killie. Again he took a while to get started, scoring four of his five Killie Premiership goals during 2017/18 after March.
He looked set to kick on, but once again, chose a move away. His Tractor move was unsuccessful and now he finds himself back in the Premiership with County.
Erwin’s got to make this Premiership shot count. This will be his last chance most likely to show he can make it at this level. He’s got nine goals in 64 Premiership appearances and needs to score more regularly than he did for the Well and Killie.
A good start is needed in Dingwall. Erwin can’t afford to start his life with Ross County the same way he started the 2014/15 season at Fir Park or his first term with Kilmarnock.