Liam Burt has played less than a minute of league football this season - but Jonathan Johansson's arrival could boost his Rangers prospects.
Baraclough believes that Erwin moved to Leeds one season too early.
Stuart McCall is ready to throw everything at Motherwell, with his team needing at least two goals on Sunday.
Motherwell came away from Ibrox with a commanding lead after beating Rangers 3-1.
Rangers and Motherwell go head to head in the first leg of the play-off final with a place in the Scottish Premiership at stake.