Hojlund, on as a substitute, slotted home the deciding goal before copying former Man United and Real Madrid superstar Ronaldo's celebration.
Ruben Amorim's United side came from behind to best the Czech side thanks to a second-half brace by Danish striker Hojlund, they now sit seventh in the league phase standings.
Manchester United interim manager Ruud van Nistelrooy conceded the Red Devils are missing a world-class striker, but remains hopeful that Ramus Hojlund and Joshua Zirkzee can develop into that role.
Coach Erik ten Hag insisted last season could have turned out very differently had injuries not hindered Manchester United's progress, but further setbacks ahead of the new campaign have dampened the mood around Old Trafford once again.
Manchester United forward Rasmus Hojlund will be out for six weeks with a hamstring injury and newly signed defender Leny Yoro has been sidelined for three months after hurting his foot, the Premier League club said on Friday.
Erik ten Hag admitted Manchester United "got away with it" after his team won an FA Cup semi-final penalty shootout against Coventry on Sunday following an astonishing collapse during the match.
Manchester United were dealt another injury blow on Friday as in-form striker Rasmus Hojlund was ruled out for up to three weeks with a muscle injury.
Haaland has almost monopolised the record books since arriving in England in July 2022, but the 21-year-old Hojlund has now scored in six successive Premier League games, the youngest player ever to do so. Incredibly it took him until after Christmas to register his first Premier League goal.
Rasmus Hojlund and Marcus Rashford are beginning to display signs of a potent partnership, Manchester United manager Erik ten Hag said after the attackers both scored in Sunday's 2-2 Premier League draw with Tottenham Hotspur.
New recruits Rasmus Hojlund and Sergio Reguilon could make their Manchester United debuts at Arsenal this weekend, according to manager Erik ten Hag.
Manchester United manager Erik ten Hag insisted Friday he had no regrets about bringing Rasmus Hojlund to Old Trafford instead of Bayern Munich-bound Harry Kane.
Manchester United sealed their swoop for Denmark striker Rasmus Hojlund from Atalanta for a reported fee of £64 million ($82 million) on Saturday.
The 20-year-old will move to Old Trafford in a deal worth 72 million pounds ($92.52 million) and will be United's sixth most expensive signing ever, the reports added
