The young Leeds United forward has more to offer than his older teammate.
But that would be a mistake from manager Uwe Rosler who should keep the 21-year-old at Elland Road and instead send another front-man out of the club temporarily.
With Chris Wood and Mirco Antenucci the first-choice forwards so far this season, that leaves Erwin and Souleymane Doukara fighting for the role of back-up striker, and so far the latter is winning that particular battle.
Doukara has been on the bench for all Leeds’ league matches so far this season while he started the League Cup clash with Doncaster Rovers, and although he has been limited to just five minutes in the Championship thus far he has at least been called upon.
In contrast Erwin has been an unused substitute of five occasions and did not even make the match-day squad for the recent victory against Derby County.
But Erwin showed late last season with former club Motherwell just what he is capable of, scoring four goals and providing four assists in his last nine league games for the Scottish side.
He then scored one and set up two in the play-off against Rangers before heading to Leeds, and he showed during pre-season for the Whites that he has the makings of a fine partnership with Wood given time.
As an impact substitute, Erwin would be a far better option than Doukara and with the sheer number of matches Leeds will have to play this season he will surely get starts along the way.