The phrase "turn of the millennium" refers to the period when one century ends and another century begins. Specifically, it refers to the time when the year 2000 transitions to 2001. Full definition
Since the mid-80's it was traditionally Serie A that attracted the star names with the likes of Maradona, Gullit, Lentini and towards the late 90's and turn of millenium there was big spending from the likes of Lazio, Juventus and the Milan clubs. (laligablog.com)
Though Pfizer's Pharmacia did have an 85 % stake in Monsanto for several years at the turn of the millenium, leading to the confusion. (traderhq.com)
Wenger is doing well but at the moment we need nothing than world class striker... admit that we will suffer the consequence of not signing a striker because next season is going to be the toughest season since the turn of the millenium (justarsenal.com)