"When a player leaves a club, you do not normally see a manager speak so glowingly about them", the former England global told Sky Sports.
"Chelsea have broken up that partnership and strengthened their rivals".
United did not finish lower than third in the Premier League era under Sir Alex Ferguson, but since his retirement have ended seventh, fourth, fifth and sixth. Will he gel alongside Kante? I am happy with the effort the club did and that the club managed to do 75 per cent of the work before the Premier League starts.
Jose Mourinho was in charge for the latter campaign and, despite securing Europa League, EFL Cup and Community Shield glory, along with Champions League qualification, knows they have to do better in the league. He will take time to settle.
Packers bring back veteran long snapper Brett Goode
Goode's signing puts the Packers back at a maximum of 90 players on the active roster after releasing Letroy Guion last Tuesday. He served as Green Bay's primary long snapper from 2008-16, playing in 142 regular-season games and 14 playoff contests.
Chelsea's squad, or whatever's left of it by the time kick-off rolls around in a little over 48 hours, face a theoretically much weaker Burnley side at Stamford Bridge, but if there is one thing that Burnley won't do is make it easy for the boys in brand new Nike blue.
"I heard whispers at the back end of last season that he wanted to go and even if the club can not come out and say too much about that, maybe there was an element of that in play here when this deal went through".
Matic followed Victor Lindelof and Romelu Lukaku as part of the United manager's summer reinforcement drive, with the defensive midfielder arriving fresh from winning the title with Antonio Conte's Chelsea.
The Belgium global, signed from Everton for a reported initial fee of £75 million last month, netted in the second half of his competitive debut in United's 2-1 UEFA Super Cup loss on Tuesday.