Glasgow Rangers sporting director Ross Wilson was a busy man throughout the summer transfer window as he attempted to improve Giovanni van Bronckhorst's squad.

John Souttar, Ridvan Yilmaz, Antonio Colak, Tom Lawrence, Rabbi Matondo, Malik Tillman, and Ben Davies all came through the door to bolster the side.

However, the Gers chief did not strengthen the club's options in the central midfield department. Tillman and Lawrence can play centrally but are more attack-minded than a traditional six or eight in the middle of the park, whilst Steven Davis and Scott Arfield were retained.

Davis is a steady pair of hands in midfield but, at the age of 37, Rangers could have found an upgrade on him in the window with a player they were reportedly interested in.

The Light Blues had a bid rejected for the Charleroi midfielder and avoided going back in with an improved offer to snap him up from the Belgian outfit.

Wilson may now be regretting that decision with Ryan Jack being out injured until next year. Davis has been solid enough in the Premiership, averaging a SofaScore rating of 6.94, but has struggled in the Champions League with an average rating of 6.54 across four appearances.

In the Scottish top-flight, the Northern Ireland international has made an average of 1.2 tackles and interceptions combined, as well as making 0.4 key passes and completing 89% of his attempted passes per game. These statistics suggest that he has been effective at retaining possession but distinctly average at winning it back and making things happen in the final third.

Zorgane, meanwhile, has made 1.6 key passes and 3.6 tackles and interceptions combined per game in the Belgian top-flight this term, which indicates that he would be a major upgrade, defensively and creatively, on Davis. He has also completed 84% of his passes and would not be a huge downgrade on the current Gers gem in that regard.

Last season, the Algerian international - who scout Jacek Kulig dubbed "extremely strong" and an "orchestrator" - was particularly impressive in the final third, as he assisted eight goals whilst creating eight big chances in 33 league starts.

He is also a whopping 15 years younger than Davis, at the age of 22, and has plenty of time on his hands to develop and improve. Rangers could have brought him in as a natural successor to the former Southampton maestro, whilst being an immediate upgrade in the middle of the park as he has more to his game in and out of possession.

Therefore, Wilson had a nightmare in the summer for the Light Blues by failing to pursue a deal for the Charleroi talent and opting against a move for a deep-lying midfield player.