#2 Florian Thauvin
The French winger joined Newcastle from Marseille in the summer transfer window of 2015 but he failed to make a grade and managed to play only 13 games for the club.
He spent just six months with the Magpies before heading back on-loan to his former club, Marseille. He found his lost form during his loan spell at his former club and Marseille signed him permanently in 2017.
He scored 41 goals in 94 league games during his second spell at the Stade Vélodrome (including the loan period) and won the UNFP Player of the Month award three times. His brilliant performances with his club caught the attention of the French coach Didier Deschamps and he was chosen as a part of France's FIFA World Cup 2018 winning squad.
His vision, dribbling, and ability to score goals from distance will make him an interesting option for the Blues if Eden Hazard decides to leave the club.