#1 Timothy Fosu-Mensah (Manchester United)
Another Crystal Palace loan man, Fosu-Mensah has been a permanent fixture in the team's back line and looked good despite their poor form. His versatility is immense: Fosu-Mensah can play anywhere in defense, and is also effective in the central midfield. He's a modern-day all-rounder and this versatility will prove attractive to managers during his career.
It initially seemed to suit Jose Mourinho, as he played the Dutchman in 4 fixtures during 2016/2017 with Fosu-Mensah mightily impressive. He was powerful, confident, and looked like he'd been playing in the EPL for many years. Typical of Mourinho, though, and Fosu-Mensah wasn't given the chance to stay and fight for his place this season.
Given Manchester United's troubles in defense at various points, this seems somewhat unwise. New signing Victor Lindelof has started uncomfortably and looks out of his depth for now; the clueless Chris Smalling and Phil Jones have continued their habit of playing well one week and utterly shocking the next. Antonio Valencia at right-back has been a great servant for his club but, at 32, will be needing to be replaced in the short-term and Fosu-Mensah should be in line to succeed him. One hopes that his performances for Crystal Palace this season will have been noticed by Mourinho and he won't feel the need to loan him out for another spell.