Manchester United manager Jose Mourinho said the "hearts and minds" of everyone at the club are with those affected by the horrific bomb attack that killed 22 people in the city on Monday evening.
A suicide bomb attack rocked the city Monday at the end of an Ariana Grande concert at the Manchester Arena.
Police confirmed that 22 people, many of them children, were killed and 59 were injured in an attack that has shocked the world.
In the wake of the attack, Uefa accepted United's request to cancel a press conference ahead of Wednesday's Europa League final, while the United team held a minute's silence at training before leaving for Sweden.
Mourinho said that the event had been in their thoughts ahead of the match against Ajax in Stockholm.
"We are all very sad about the tragic events last night; we cannot take out of our minds and our hearts the victims and their families," Mourinho said.
"We have a job to do and we will fly to Sweden to do that job. It is a pity we cannot fly with the happiness that we always have before a big game.
"I know, even during my short time here, that the people of Manchester will pull together as one."
Rival Peter Bosz said that the final should have been a "football feast," but will inevitably be overshadowed by the attack.
Speaking in Stockholm, Ajax coach Bosz offered his and the club's condolences to the victims and their families.
"What happened yesterday in Manchester was something that we all feel. On behalf of the players, staff and everyone at Ajax, we would like to express our sympathy with the victims that unfortunately fell," he said.
"The feeling that prevails for me is that the final doesn't have this glow that it should have. Tomorrow evening should be a football feast, but because of the events in Manchester we are all affected."
Several of United’s squad took to social media to express their sympathies after the attack.
Club captain Wayne Rooney posted on Twitter: "Devastating news this morning. Thoughts and prayers are with all those affected."
— Manchester United (@ManUtd) May 23, 2017
Can't believe what happened last night, My thoughts go out to all those affected. #PrayForManchester
— Daley Blind (@BlindDaley) May 23, 2017
My thoughts and prayers are with everyone affected by last nights attack on this beautiful city. We will stand together in this dark hour ❤️
— Jesse Lingard (@JesseLingard) May 23, 2017
Much rage, much pain! My condolences and support to the victims' family member involved in the atrocious attack to the heart of the city. pic.twitter.com/hV4JsvV4cQ
— David De Gea (@D_DeGea) May 23, 2017