Talk of a straight swap between PSG and Chelsea has had supporters of the west London club intrigued, but the deal looks unlikely to go ahead.
However, Cavani to join Chelsea and Costa to join PSG is 20/1, with reports that Antonio Conte is keen to hold onto the Brazilian striker.
The imposing Chelsea hitman looks likely to remain at Stamford Bridge this summer, however PSG are joint-favourites to acquire him, with a move to the Park des Princes at 5/1.
A return to Diego Simeone’s Atletico Madrid, where the Lagarto-born striker won La Liga in 2013-14, is the same price.
Cavani, meanwhile, is continuing to impress at PSG, and while Chelsea are the favourites if he does leave, the 29-year-old is still 5/1 to join the Blues under incoming boss Conte.
Elsewhere in the Premier League, the Manchester clubs will be looking to improve on a difficult campaign, and both United and City are 12/1 to add the talented forward to their ranks.
Liverpool also have an outside chance of securing Cavani’s signature, and Reds boss Jurgen Klopp is set to bring in a new striker with Christian Benteke’s exit from Anfield looking increasingly likely.
A move to Arsenal may also prove popular at 12/1, while Spanish giants Real Madrid and Barcelona are 25/1 and 50/1 respectively to bring Cavani to La Liga.
All Odds and Markets are correct as of the date of publishing.