#5. John McGinn
From the youngest on this list to the oldest on this list. At the age of 24, it may be a stretch to call John McGinn a youngster, but there is no doubt that he only has the best of his career still to come. Signing for Aston Villa this season from Scottish side Hibernian, McGinn has quickly cemented himself as a key cog in the Villans' starting line-up.
Already a full international for Scotland, McGinn has made a name for himself as a box-to-box, all-action midfielder, able to contribute significantly both defensively and offensively. His statistics back up this perception of him, as he has scored 5 goals and provided 8 assists from a deep-lying midfield position, as well as completing 1.8 key passes and 2.6 long balls per game at a passing success rate of 79.6%. He also manages to take 2.3 shots per game, providing a massive threat from long range. In addition, he also completes 1.7 take-ons each game, highlighting his all-round attacking qualities.
The Scot is also a more than capable player defensively, making 3.2 tackles and interceptions each game, with the slight downside that he commits 1.6 fouls per game as well. He is more than willing to 'take one for the team', so to speak, evidenced by the 11 bookings he has collected this season.
With the apparent lack of interest shown in him by the bigger clubs, he could well prove to be a solid option in midfield for Celtic, if he would prefer a move back to his homeland, which seems unlikely, or join Celtic's former manager Brendan Rodgers in the Premier League, with Leicester City, both of whom are rumoured to be interested.