Senior Celtic stars are finding Jeremie Frimpong an extremely tough opponent in training sessions at their Lennoxtown headquarters, Football Insider understands.

The right-back, 18, lit up Parkhead on his Hoops debut on Wednesday night as he played a starring role in their 5-0 Scottish League Cup thrashing of Partick Thistle.

A Celtic source has told Football Insider that super-quick Frimpong is an “absolute nightmare” to mark in training for his teammates and the wide players and defenders hate having to stop him.

The teenager translated that potential into an immensely impressive first senior outing, with manager Neil Lennon claiming afterwards “he took the opportunity and was excellent”.

Celtic have big plans for Frimpong, a Holland Under-19 international who was signed from Manchester City on a four-year deal at the start of this month.

Frimpong felt he had outgrown development football and jumped at Celtic’s offer of a far more direct route to first-team football than he had at the Premier League champions.

Subscribe to Football Insider TV now

A right-back renowned for his supercharged pace and attacking prowess, he is very much in the Trent Alexander-Arnold mould of modern full-backs.

The intention of the coaching staff is to gradually phase him into the side and give him game time even though he faces competition from two fellow right-back new arrivals.

The new first choice on the right side of defence at Celtic is Hatem Abd Elhamed, who signed for £1.5million this summer, while Moritz Bauer has also arrived on loan from Stoke City.

However, Abd Elhamed can also play centre-back and he moved across to partner Kristoffer Ajer against Partick on Wednesday, a night in which Bauer did not make the squad.

In other Celtic news, a pundit has told Football Insider how a training ground fall-out is at the heart of dispute between Neil Lennon and Hoops big name.