Left for £0, now worth £20m: Rodgers made Celtic blunder over "extraordinary" machine - opinion

Celtic have had a number of successful academy graduates make their way through to the first team at Parkhead over the years.

Callum McGregor and James Forrest are two great examples of players who have been able to rise through the ranks and establish themselves as key stars for the Hoops at senior level.

However, some talented prospects can slip through the cracks and that is what happened with left-back Aaron Hickey in Glasgow. He was brought to the club from Hearts in 2017 and did not make a single first-team outing as a teenager before Brendan Rodgers sanctioned his exit back to Tynecastle for nothing in the summer of 2018.

Two years later, Italian side Bologna snapped him up from the Scottish side and he is now attracting interest from England.

Fabrizio Romano recently reported that Premier League side Newcastle United are eyeing up a deal worth up to £20m for the youngster, which means his value has risen astronomically in the space of around four years. The Magpies are looking to snap him up this summer after watching him catch the eye in Italy this season.

In the Serie A, he has averaged an impressive SofaScore rating of 6.89 across 27 appearances. He has been able to showcase his attacking flair from full-back with four goals and one assist, whilst creating 0.5 chances per game.

Defensively, he has been solid throughout the campaign. Hickey has averaged 2.3 tackles and interceptions per game and has only been dribbled past 0.3 times per match, winning 60% of his overall duels in the Italian top-flight. This shows that he is a strong defender who also offers quality in possession, which makes him a modern-day full-back who can make an impact at both ends of the pitch.

At the age of 19, he also has the potential