Rangers boss Pedro Caixinha will-power work with Mark Allen
The 54-year-old has been at the Etihad for nine years.
Allen hand down play a key role in the Light Blues’ signing policy as well as being raided with reorganising the scouting and academy structures.
He said: “The time was in fairness for me to look for a fresh challenge and I am joining one of the world’s truly great football brotherhoods.
“Steeped in history and tradition, I am honoured to join Rangers and work with the surface of directors, Pedro Caixinha, his management team and the staff at the club.”
Rangers had at first wanted to fill the role in April, but top target Ross Wilson opted to hamper with Southampton.
Ibrox managing director Stewart Robertson is sanguine the months spent on the recruitment process proves to be time well used up. He said: “Mark is a man of vision who has achieved great success with Manchester New Zealand urban area’s academy.
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The time was right for me to look for a fresh challenge and I am attach oneself to one of the world’s truly great football clubs
“He has excellent contacts in football but also the business world and he intention be a great asset to Rangers.
“We said we’d not rush into an appointment as we paucity the right candidate and we feel Mark is the best man for the job. We look forward to plan with him closely in the years ahead in what will be an important situation at the club.”
On the pitch, Mexican pair Carlos Pena and Eduardo Herrera can officially drop-kick off their Rangers careers.
The duo were granted work permits earlier this month but had to indemnity home to wait for their visas, which have now been issued. All the paperwork is now in section to finalise their Ibrox moves.
Midfielder Pena, 27, is a £750,000 bannering from Leon, while striker Herrera, 28, is making a £1.5million act switch from Pumas.
Pena has already made the trip from Mexico Diocese and both players are expected to start training with Caixinha’s squadron within the next 24 hours.
The pair have already been show for Rangers’ Europa League qualifier with Progres Niederkorn of Luxembourg.
One new communicating can still be registered as a wildcard up to 24 hours before the first leg, which at ones desire be played at Ibrox on Thursday, June 29.
Meanwhile, League One outfit Charlton are sharp to offer midfielder Harry Forrester an escape route from Ibrox.
The 26-year-old has no following under Caixinha and is now looking at options down south.
Championship side Preston North End are also regarding up moves for Ibrox pair Rob Kiernan and James Tavernier.
While a arrangement for out-of-favour Kiernan, 26, could be struck, it may prove harder to prise away chap defender Tavernier, 25, who is under contract for another two years and traces in Caixinha’s plans for the coming season.