The five-time Ballon d’Or winner, 36, was one of the few players to have regularly played under the Norwegian this season and clearly holds his former boss in high regard.
Writing on social media, Ronaldo said: “He was my striker when I first arrived at Old Trafford and he has been my coach since I came back to Man United.
“Most importantly, Ole is an exceptional human being. I wish her the best in all that her life has in store for her.
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“Good luck my friend, you deserve it. “
The post was accompanied by two images depicting the time the pair have spent together in United’s famous red, one of them celebrating a goal as team-mates – the other from this season with Solskjaer as manager.
Ronaldo has scored nine goals in all competitions this season since his triumphant return to the club which has helped him establish himself on the world stage.
At times Ronaldo’s brilliance seemed to come at the expense of Solskjaer, with many claiming the former United boss had limited tactical acumen and instead relied on the genius of his talisman.
However, even the four-time Champions League-winning striker couldn’t turn the tide on Solskjaer’s long-term fortune as United boss, given he was sacked just four months after securing a three-year contract extension.
A recent string of spectacularly disastrous forms ensured that the writing was on the wall, Saturday afternoon’s humiliating 4-1 loss to newly promoted Watford, the fifth loss in the last seven league games.
After being tipped for the title by many this summer, United are instead in eighth place in the Premier League table behind Arsenal, Wolves and Tottenham.
A tilt for the title seems far away, given that the Red Devils are now six points behind West Ham in fourth, not to mention table tops Chelsea, who have a 12-point cushion over United after 12 games played.
As a serial winner throughout his career, Ronaldo’s demand for excellence means that nothing less than silverware at the end of the season can be considered a success.
Matthew Peters/Manchester United via Getty Images)
However, Solskjaer’s United have shown little sign of ending their four-year wait for a trophy, regardless of Ronaldo’s form in front of goal.
The Norwegian’s sacking means he is leaving United without getting his hands on any team honor, with the club’s latest manager to do so being Jose Mourinho and the 2017 Europa League.
United and Ronaldo’s attentions now turn to progress to the Champions League, with a decisive group stage game at Unai Emery’s Villarreal on Tuesday night.
Michael Carrick will take charge of the trip to Spain before an interim boss is appointed to oversee proceedings until the end of the season.