#3 Dries Mertens

Napoli manager Maurizio Sarri has had his regrets over shifting Mertens' position to that of a central striker's from a winger's. Sarri regrets that he didn't make that call earlier owing to the sheer numbers on display after Mertens took charge of the goalscoring duties for Napoli.
He made the switch at the start of the 2016/17 campaign and has not looked back since. Mertens, who is 31 right now, was surely losing the pace that was required to operate down the flank. He has, in fact, now gone on to revive his career by shifting to the centre and taking up the striker's role.
From 41 appearances (across all competitions) this season, the diminutive Belgian has scored 21 goals and 9 assists. Mertens has played a pivotal role in helping Napoli mount a serious title challenge against Juventus this season.
He will also be one of Belgium's main men as they head to Russia for the 2018 FIFA World Cup.