"I saw Alan against St Mirren about two weeks ago and you could see his attributes then," said Burley. "He has the capability to be one of the best attacking full-backs in European football.
"I think, with the competition he will face at Tottenham, that will really push him on. The Premiership in England is a very difficult league, so I think it will be a big challenge for him.
"He thought long and hard about the move but I believe it will be a good one for him as a player."