United's Belgian striker Romelu Lukaku was deemed surplus to requirements by Chelsea, but has flourished at United, while midfielder Nemanja Matic was surprisingly allowed to join Mourinho at Old Trafford last season - a departure that seriously undermined Conte's squad.
Sportsmail's claims Chelsea are compiling a "dossier" of transfer targets ready for the new manager to give the final say on - whether that's Maurizio Sarri, Luis Enrique or Mauricio Pochettino.
"United have been average, Chelsea have been unpredictable".
Hazard, who is seeking a first FA Cup winners' medal, is not the only member of the Chelsea camp whose future is in doubt.
"We finished second this year and are in another cup final - if we can win that, I would think that's massive, massive progression".
After three years at boyhood club Barcelona, following a move from Arsenal where Fabregas spent nearly a decade, he proved a pivotal figure as Chelsea claimed the 2014-15 title, providing a league-leading 18 goal assists.
N'Golo Kante, meanwhile, is clear that Chelsea have had a disappointing season and winning the FA Cup will go some way in ensuring it ends on a good note.
Both managers clashed after Chelsea's 4-0 win over United at Stamford Bridge, and Mourinho later said that the Italian's celebrations were "humiliating".
There is speculation that Javier Zanetti, who played under Mourinho at Inter Milan, is one of the names in frame.
It comes after reports claiming Dortmund have entered a race to sign Morata, who has been linked with a return to Juventus after a hard season at Chelsea. "We have six days to change our approach, our desire, our will to fight because we can do much better".
In the end, I have to side with Conte because of the way he has held himself together in the face of nearly impossible conditions and still brought his team to a Wembley final.
The FA Cup Final takes place on Saturday, 19 May, with kick-off at 5:15pm.
"I've improved with respect to last year and I've felt good, I've felt more confident", the 27-year-old said.
Whether Conte's side can cause United problems depends a lot on whether Hazard turns up. "It hasn't quite gone to plan in the league and other cup competitions but we want to go for the FA Cup and win silverware", McTominay told United's website www.manutd.com.
United defender Phil Jones insists winning the third major trophy of Mourinho's reign would make this season a step in the right direction.