Many were left stunned on Friday evening as Rangers confirmed the exit of Allen, who had been in the role for just over two years.
Lured from Manchester City, Allen oversaw a restructuring of the Rangers squad, and has now left the club for family reasons and to pursue other options in his career.
That leaves Rangers needing a new director of football ahead of the January transfer window, and two names are being mentioned for the position.
It's claimed that Rangers are eyeing Southampton's Wilson for the job, but head scout Andy Scoulding is also being mentioned for the position given that he's already at Ibrox.
Rangers could go and promote Scoulding, who worked with Steven Gerrard at Liverpool, but the prospect of finally landing Wilson may well be appealing too.
The Scot was Rangers' top target to become director of football in 2017 before eventually landing Allen, with Wilson telling BBC that he rejected the move to Ibrox.
Wilson currently serves as director of football operations at Southampton, and Rangers may find it difficult to prise him away from such a key role having already failed once.
Rangers will hope to get this situation sorted soon, and with two names already in the frame, an appointment may well come relatively soon.
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