The Dutch titleholders confirmed on Friday that the 43-year-old coach, and his assistant Hennie Spijkerman, have committed themselves to the club for a further four years
|10/11||Ajax are 10/11 with BetVictor to win the Eredivisie next season
Ajax also confirmed on their official website that assistant coach Hennie Spijkerman has also committed himself to the club until June 30, 2017.
De Boer, who spent 11 years at Ajax as a player, has led the Dutch giants to three successive domestic titles since being appointed coach in the summer of 2010.
The 43-year-old previously was in charge of Ajax's youth team before returning to the Amsterdam ArenA in 2010 after a stint as an assistant coach with the national team.