And he insisted that his first job at Swindon Town handed him the ideal managerial apprenticeship to get the best out of players both individually and collectively.
Asked at Thursday's press conference if he picked up any fresh ideas during his playing days in France, as he prepares to cross swords French legend and Fulham boss Jean Tigana again, Glenn replied: "You learn all the time as a player and a manager.
"New ideas opened up to me when I went across to France as a player that I managed to remember and take on board.
"There were also lots of things when I was a player at this club.
"There is no magical system that works better than other, it's just clarity.
"Players need clarity from coaching staff and if you've got that alongside the tactical side and the way you work in training, certain techniques, if you've got that clarity then your ship has a good rudder and is being steered in the right way."
Glenn kicked off his managerial days at Swindon in 1991 and led them to the Premiership in 1992-93 before moving to Chelsea.
He recalled: "It was a good apprenticeship for me, not to have money available, to get a team up into the Premiership and get the best out of those players collectively and individually.
"It was hard work but fruitful and some managers have never had that.
"They've been put in at the top end, given lots of money and possibly would never know what it's like to be up against it, spending time with players and having to improve them."
Glenn Hoddle says clarity of coaching is the name of the game in football management.