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Trippier has been linked with a move from LaLiga champion Atletico to Premier League giant United this off-season.
The 30-year-old has spent the past two seasons in Spain and is reportedly open to a switch to United but declined to discuss any possible move ahead of Thursday's (AES) Euro 2020 semi-final against Denmark at Wembley.
"I've just enjoyed the season [at Atletico] and we've won the title," Trippier said.
"I'm away with England, we're playing Denmark and I'm not focusing on my club or what is going on.
"I'm just focused on England and doing as best as I can if I play. If I don't play, I still give 100 per cent."
Trippier, who has one more year remaining on his current Atletico contract, is riding a wave of confidence after lifting the LaLiga title, which is oozing into his England performances having started against Germany and Croatia.
"It's been an unbelievable season and it motivates me to win more, even at my age," Trippier said.
"Coming away with England, it gives me real confidence and maybe I can share that experience with others who have not won things.
"Then again, we have players who are winning trophies with their clubs now and they all have that winning mentality."
United have not won the Premier League title since 2012-2013, nor any trophy whatsoever since 2017 after losing the 2020-2021 Europa League final to Villarreal.
England has won just one of its last six competitive meetings with Denmark (D3 L2), with that victory coming at the 2002 World Cup (3-0).
Gareth Southgate's England is playing in its third European Championship semi-final, losing to Yugoslavia in 1968 and going out on penalties to Germany in 1996. As it stands, the Three Lions have played more games at the Euros without ever reaching the final than any other nation (36).
England’s 4-0 rout of Ukraine in the quarter-final was their biggest ever European Championship win, and their biggest victory in the knockout stages of any major tournament. Indeed, they netted as many goals against Ukraine as they had in their previous four Euro 2020 matches combined.
Meanwhile, England has kept a clean sheet in all five of their games at Euro 2020 so far – no team has ever kept six clean sheets in a single edition of the European Championship or World Cup before.