Bobby Wales is set to be thrust straight in for a debut in the Dundee derby at Tannadice on Saturday and has "a point to prove" after moving to Dens Park on loan, says Scott Allan. Former Kilmarnock striker Wales, 21, is back in Scottish football after struggling to make the grade at Swansea City following his move last summer. With Simon Murray out injured long term, can Wales recapture the form he showed at Killie?