The Uruguayan is one of Europe's hottest striking properties, and it's easy to understand why he would be coveted at Old Trafford.
With PSG manager Laurent Blanc on the playing staff at United during Ferguson's tenure, it also makes perfect sense to utilise a bulging contacts book, but the move could possibly be seen as more undermining of Moyes' position.
In any event, Cavani remains a prime striking target, according to Simon Jones of the Daily Mail:
Moyes was interested in Cavani in the summer but shelved the idea of a bid as he pursued midfielders and a left back.
Injuries and form have dictated a world-class striker is required though and Cavani's dissatisfaction with life in Paris means he is a prime candidate.
United could certainly do with a front man who has hit a remarkable 17 goals in 20 appearances this campaign, on the back of a 33-goal season for Napoli, which persuaded PSG to invest a French-record transfer fee of €64 million.
Cavani's powerful and direct style is perfectly suited to the English game, and at 6'2", the player bears all the hallmarks of a traditional centre-forward.
Rooney's pledge of allegiance to United has been notable by its absence. United either sell him at some stage or risk losing him for nothing.
The only other option is they persuade him to sign a new contract but that appears to be unlikely and Jose Mourinho would not be offering regular updates if the possibility had not come on Chelsea's radar.
Within the sport it is an open secret the relevant people want the deal to happen.
An injury-hit campaign for Robin van Persie has curtailed the Dutchman's excellence, but has still yielded eight goals in 15 games per WhoScored.com. A fully fit Van Persie alongside the rampaging Cavani is a mouth-watering prospect indeed.
At just 26 years of age, the Uruguayan is still to hit his peak and is bristling with attacking intent, whereas Rooney has, at times, seemed disinterested with life with the Premier League champions.
Danny Welbeck has found his form during the absences of both Rooney and Van Persie, but it's hard to see the young Englishman getting into the side if Cavani were to head to Manchester.
Cavani's skill set is similar to that of Rooney, so Moyes could potentially have the luxury of a seamless integration of the player into his side.
Whether the Old Trafford money-men are prepared to countenance a huge offer for the player remains to be seen.