Rasmus Hojlund has warned Manchester United must be "sharp" at set-pieces against Arsenal in the FA Cup.

United are set to play Arsenal in the third round of the FA Cup on Sunday afternoon and the two sides will clash again just one month after meeting in the Premier League in London.

Arsenal won that fixture 2-0 and Declan Rice and Bukayo Saka delivered excellent deliveries into the box from corners for Jurrien Timber and William Saliba to get on the scoresheet.

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The Gunners have the best record from set-pieces in the Premier League and caused havoc. Only Wolves have conceded from more set-pieces than United in the topflight this season and Ruben Amorim and his coaching staff have been desperate to address that glaring weakness.

Hojlund sat down with club media ahead of facing Arsenal in England's oldest cup competition and warned lessons must be learned about defending set-pieces after last month.

"It's a tough opponent and away, but we're going to go for it and, and try to go for it again this year. It's a good game and the Emirates is a nice stadium. The pitch is very good," Hojlund said.

"I had my debut there, so it's a special place for me. I'm looking forward to it. It can be [a good thing that United played there not long ago], if we do it right. I think we need to be sharp at set-pieces, they have been been very good on that. and they scored twice from that last time around.

"So yeah, very focused there. Just trying to keep improving and do what the manager's saying and I think we will be good."

United will be supported by around 8,000 travelling fans at The Emirates this weekend and Hojlund reiterated the importance of the club's loyal following up and down the country.

"I think both at home, but especially away, the fans are very, very good," he added. "Like at home, obviously we have the home crowd, so it's going to be the ones probably we hear the most.

"But the away crowd is doing very, very well and you can always hear them, and that's special, especially when you go to a place like the Emirates, where they also have a lot of fans there. So yeah, [they are] very, very important."

United are the defending champions in this season's FA Cup after recording a stunning victory over Manchester City at Wembley in last term, which was Erik ten Hag's final trophy.

The bookmakers make six clubs, City, Liverpool, Arsenal, Chelsea, Tottenham and Newcastle, a shorter price than United to win the FA Cup and the final is set for Saturday, May 17.