For all his qualities, Yedlin is a 21-year-old with just seven international caps. He is inexperienced and occasionally defensively unsound. He needs to develop in both an attacking and a defensive sense in order to be an effective Premier League player.
In moving to Tottenham, Yedlin has demonstrated his ambition. Had he moved to a smaller team, he would be a more important player and could be catered for in order to get the most out of his attacking talent.
He will not get that luxury at Spurs. He will be expected to contribute in attack and cut off opposition attacks coming down his flank. He has signed up for a very tough job.
The good news is that Spurs have only one right-back that will realistically be ahead of him in the pecking order, and with Europa League likely the venue for Spurs' European campaigns in the near future, he will have plenty of games to learn his trade. Pochettino is also an ideal coach to help him develop.
Yedlin is not yet ready to start the biggest games in the Premier League, but he is already in a position where he could contribute to Spurs.
He will have every opportunity to learn and develop. If he continues to grow and mature on the field, he'll become a genuine rival to Walker.