Liverpool's Egyptian winger missed out a chance to win another achievement this year as Real Madrid midfielder Luka Modric was named the Union of European Football Associations (UEFA) best player of the year award on Thursday.
Ronaldo is still fondly remembered by United fans, nearly a decade after leaving for Real Madrid, but Mourinho has warned that the five-time Ballon d'Or victor is out to down the Red Devils, just like he was when helping Los Blancos to a 3-2 aggregate win on his most recent meeting with United.
The forward was a key member of the Real Madrid side that won its third consecutive Champions League title, scoring 15 goals en route to the final, and was awarded as the Forward of the Season. "We want to be stronger in Europe and we want to have the opportunity to fight for this Champions League".
"Football is played within the four lines of the pitch and that's where Cristiano won", said Mendes.
"It's the first time this has happened to me in my life".
Having progressed through a group featuring Real Madrid, Borussia Dortmund and APOEL Nicosia, they may feel happy with the draw this time around.
Real Madrid, who beat Liverpool 3-1 in last year's final, cleaned up in the Uefa awards, with their players winning in all the categories.
Speaking after United 2-0 win at Burnley, Mourinho said: "Juventus is one of the teams in Europe that invested to win the Champions League because they don't need to invest to win the Scudetto".
"There will be a lot of passion around our matches in this group with Napoli, Liverpool and Red Star".
"I think we should consider Manchester City the favourites for our group", said Fonseca.
Barça's coach, Ernesto Valverde, has spoken about his side's rivals in the group stages and called it "the most complicated group" he could've expected.
Earlier, UEFA announced the best goal of last season.