In 2012-13 season, with St. Johnstone qualified for Europa League, thanks to Hearts, Davidson captained his first match, playing in Europe, in the second round of the Europa League against Turkish side Eskişehirspor, but they proved to be too strong and failed to win either legs losing 2-0 and drawing 1-1 respectively.
After again a season where he did not receive much opportunities, he was loaned out back to Turkish side Eskişehirspor where he partnered up with Ümit Karan.