After 13 record-breaking years at Old Trafford, the Red Devils’ all-time leading goalscorer was allowed to leave by Jose Mourinho in the summer of 2017.
The decision was taken by the ex-England captain to return to his roots at Goodison Park, but a homecoming did not go entirely to plan.
Rooney would spend just one season back on Merseyside before heading to America and penning a deal through to 2021 with D.C. United.
The 32-year-old has enjoyed a welcome return to form in Washington, with a play-off place secured in his first campaign as he found the target 12 times in 21 appearances.
Former England boss Capello believes Rooney needed a switch such as that as he had stagnated at Everton and lost many of the qualities which had previously established him as a Premier League icon.
The Italian said at the Laureus World Sports Awards in Monaco: “Rooney is a good player, but I saw the season when he returned to Everton and he didn't perform well.
“He was on the pitch like a different person. He was not with the team. It was not the Rooney I remember - fighting, running - nothing. He lost everything, all his characteristics.
“He decided to go to America. The football is different, it's a new experience and a lot of Italian players go there at the end of their careers.”
Rooney did record 11 goals across 40 outings for Everton, including one memorable effort from the halfway line against West Ham.
He was, however, unable to deliver the consistency expected of him and found himself slipping out of favour under Sam Allardyce.
A spell in MLS has allowed him to rediscover his spark, while the 2018-19 campaign has also seen him take in a 120th appearance for England – with the Three Lions’ highest goalscorer in history stepping out of retirement for one final cap against the United States in November.