Celtic have reportedly stepped up their interest in signing highly-rated St. Mirren midfielder Lewis Morgan with scouts raving about him, according to the Daily Express.

Morgan began his early career with Rangers before leaving as a 15-year-old in 2012 to join the St. Mirren youth ranks where he has developed into a first-team regular in recent years.

Primarily an attacking midfielder, the 21-year-old can also play on either wing and has enjoyed a terrific start to the 2017/18 season, netting six goals and providing three assists in 12 appearances across all competitions.

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The Scotland U21 international has attracted interest from former club Rangers and Premier League side Swansea, but Celtic have scouted him extensively in recent weeks as they weigh up a move in the near future.

English Championship side Burton Albion had a £200,000 bid rejected in the summer for Morgan but teams can approach the player from January regarding a free transfer move in the summer when his contract with St. Mirren expires.

Cardiff City are also monitoring his situation along with Celtic, Rangers and Swansea.