The former United captain endured a difficult couple of years at Old Trafford, finding himself increasingly marginalised under both Louis van Gaal and Jose Mourinho's stewardship.
But will a return to Goodison Park - the venue where Rooney announced his arrival to the footballing world at just 16 years of age - mean a return to anything approaching his former goal scoring glories?
bet365 certainly think it's unlikely, offering 11/10 (2.10) that Rooney scores nine or more Premier League goals in the 2017/18 campaign. It's 8/11 (1.73) with the same firm that Rooney scores eight or fewer.
There's also the price of 100/1 (101.0) that he is crowned the division’s leading marksman, an accolade he has never achieved, coming closest in 2010 when he was three behind Didier Drogba with a total of 26.
Tallies of five and eight league goals in the last two seasons don't make those prices sound too appealing but it's worth noting that England's leading goal scorer, who has hit a total of 198 top flight strikes in 460 appearances, will surely get plenty more opportunities on Merseyside than he did at United of late. The question could ultimately be whether or not he is deployed as a central striker or in a more withdrawn role.
Upon the move being confirmed, the striker said "There will be pressure on me to perform, but I’m ready to go. I believe I can help move this club forward and be more successful on the pitch."
It's 6/4 (2.50) that Rooney scores a league goal against his former club next term, and punters who don't believe he'll make his mark in either fixture can back 1/2 (1.50) on the other side of that particular wager.
There's also a market about exactly how many goals Rooney will manage against United in the Premier League next season, with one available at 2/1 (3.0), two priced at 12/1 (13.0) and three or more a 50/1 (51.0) chance with bet365.