Rangers midfielder Liam Burt the chance to impress on trial at Aberdeen.The 21-year-old was at Pittodrie for Tuesday night’s thumping win over Hamilton as a guest of the Dons after leaving the Hoops in the summer.Burt had been training with Barnsley last month and also had a short stint on trial at Sunderland.But the five-times capped Scotland Under 21 international is still on the lookout for a club as a free agent and has taken up the offer of a trial stint at the Dons.McInnes said: “We just