Maguire hasn’t played since suffering ankle ligament damage against Aston Villa on May 9 and was on crutches as recently as last week.
England coach Gareth Southgate has named Maguire to his provisional 33-man squad for the European Championship, but that number will be reduced to 26 next Tuesday.
Solskjaer sometimes names his team on match day, depending on injury issues, and will give Maguire as much time as possible to prove he’s fit.
“We prepared well,” Solskjaer said. “Anthony didn’t succeed, Phil didn’t and Harry is going to be jogging the sideline a bit, I think, and he will probably try to participate (for the last practice session).
“It’s always difficult to leave players behind throughout the season. A final is a reward for what you’ve been doing all season and then if there is any doubt between a couple, it’s the form in the later stages.
“We will enjoy the last session and the players will have the team tomorrow. “
Luke Shaw, who attended the pre-match press conference with Solskjaer, said of Maguire: “Obviously Harry is here. We have yet another session so we’ll see how he’s doing but not too sure yet.
“So we hope he can be available, but the main focus is on the players who are ready to enjoy today’s session and enjoy tomorrow’s game. “
United are favorites but have drawn their four European appearances with Villarreal 0-0 and clashed with a Europa League specialist at Unai Emery.
Emery has won the competition four times with Sevilla and inflicted a first Premier League defeat on Solskjaer as United manager.
“Every player who qualifies for a final has the expectation and the pressure to win,” added Solskjaer. “We are preparing to win, we plan to win, we expect to win, but I’m sure Unai feels the same with his team and his players.
“It was a long qualification to get there and it’s 50-50 when we get to the final. I am confident we are ready for this. In the final, anything can happen. You can concede a goal from the first minute. , injury, expulsion, anything can happen. That’s the thing with a finale. ”