It was the tail end Tottenham’s final training session ahead of its International Champions Cup finale, against AC Milan in Minneapolis, and they closed out with a simple exercise, a rondo, with two players rotating into the middle to try to disrupt passes. Broken into three circles, one group was watched most closely by manager Mauricio Pochettino. It was made up of returning starters like Christian Eriksen, hopeful rotation players like Lucas Moura, and promising youngsters of the future like Luke Amos.



As the passes flew around the circle, the young American international Cameron Carter-Vickers frequently caught Pochettino’s gaze.



Once seen as the brightest defensive prospect in the United States’ player pool, the Southend-on-Sea-born center back has seen his stock slip in recent seasons. He spent 2016-17 with Spurs, managing appearances in two FA Cup matches and two League Cup games. And when the club brought in Davinson Sanchez to fill out the...