Watford goalkeeper Ben Foster has urged Sir Elton John to cancel a concert in Copenhagen, in order to attend the team's FA Cup final against Manchester City.

The Hornets have reached the FA Cup final for the first time since 1984 and would lift the famous trophy for the first time if they upset favourites City at Wembley Stadium (live on ESPN+, Saturday, May 18, at 12 p.m. ET).

Sir Elton is Watford's honorary life president and was chairman of the club in the 1970s and early 80s, and even has a stand named in his honour at Watford's Vicarage Road, but the singer is set to miss the team's biggest match in years when his world tour reaches Denmark on the same night as the final.

But according to Foster, there is only one place Sir Elton should be on May 18.

"It's no dilemma. He should cancel right now," Foster told reporters following Watford's win over Huddersfield on Saturday.

"I have loads of people I know who have weddings for that day and stuff. It is their own fault -- don't book a wedding in the summer for Cup final day."

Watford reached the final thanks to a thrilling 3-2 win over Wolverhampton Wanderers earlier this month, after goals from Gerard Deulofeu and Troy Deeney led the side to an improbable comeback.

Javi Gracia's team are also eighth in the Premier League but were not expected to have their 2018-19 campaign last any longer than the final day of the Premier League season on May 12.

"I don't think you could have predicted this at the beginning of the season, but as the season wore on it became obvious we had the chance of doing something," Foster added. "So, Elton, you just need to cancel, sorry guys."