Archie Gray’s decision to leave Leeds United for Tottenham was vindicated on Thursday night after making his full European debut. Gray joined Spurs for £40 million in the summer and has had a slow start to life in north London, but is expected to see plenty of game time in the Europa League. Despite Eddie Gray’s insistence midfield is Gray’s best position, the 18-year-old was again playing at right back as a 10-man Spurs defeated Qarabag 3-0 at home. With former Leeds loanee Djed Spence having been left out of the Europa League squad completely, Gray is likely to continue at right-back through…