So much of the Louis van Gaal appointment at Manchester United has focused on how beneficial it will be to assistant manager Ryan Giggs, as the Welshman - who retired from playing this week - will effectively look at the Dutchman as a mentor.
True, the Sir Alex Ferguson instructed Giggs will receive an exemplary further education under the wing of van Gaal, yet the relationship will be mutually beneficially, as history has taught us through the experiences of foreign managers at both Arsenal and Chelsea.
Speaking to Sky Sports, former Blues boss Ray Wilkins explained the importance of having Giggs as van Gaal's number two: "Ryan knows what Manchester United are all about and Louis has been very clever in appointing him. Giggs has worked for the last 20-odd years with the best coach the world has ever seen in Sir Alex Ferguson, so he has learnt off the very, very best.
"It is also key the likes of Paul Scholes, Phil Neville and Nicky Butt will remain at Old Trafford as well."
While Giggs may learn through van Gaal's handling of the press, tactical mastery, youth development, attacking spirit and training ground routines, van Gaal will learn the culture of Manchester United, the finer and more intimate/personal details of every employee of the club and also the intricacies of working in the English football industry, rather than Dutch, German or Spanish.
Having a long-reigning servant of the club to lean on worked wonders for the integration of Arsene Wenger at Arsenal in 1996, who could rely on a fan's favourite Pat Rice as his assistant, while Jose Mourinho had Steve Clarke to help his Stamford Bridge acclimatisation in 2004.
The importance of a domestic coach in these two cases was paramount to the near instant achievements of the foreign managers - can Giggs and van Gaal emulate that?