Yeovil manager Gary Johnson has told his players not to be star-struck when they host Manchester United in the FA Cup third round on Sunday.
League One's bottom side will face some of the game's biggest names.
"I don't want the lads having selfies with Wayne Rooney," Johnson told the Western Gazette.
"We are going into battle and trying to stop one of the best teams in the world. So there won't be any selfies while I'm around."
Glovers boss Johnson says his players, who have lost their past three games since beating Accrington in their second-round replay, must focus solely on the match.
"Being star-struck by Manchester United is a concern and you can't stop human nature," he said.
"This is a one-off game, which some of the lads aren't going to have again. I'm sure they will think: 'Can I get Wayne Rooney's boots?' You know that's going to happen.
"But we need to make sure we get into game mode. I don't mind it after the final whistle, but I will have the raging hump if my players swap shirts before then."
United lost to MK Dons in the second round of the Capital One Cup earlier this season, and manager Louis van Gaal said league places "mean nothing".
"We have learned from the Milton Keynes game," said the Dutchman. "They are also in League One. Everything about playing a lower-league team will be different - the pitch, the stadium."
|Man United red-hot favourites|
|Wayne Rooney has scored in each of his past five FA Cup matches (six goals in total).||Rooney has netted 11 goals in his past 14 starts and three more in his past five substitute appearances.|
|Man Utd have played Yeovil twice before, each time in the FA Cup, with the Red Devils winning 3-0 in 1938 and 8-0 in 1949.||Manchester United have lost just once (v Leeds, 2010) in their past 39 FA Cup matches against lower-league opponents (W32 D6 L1).|
With United nine points behind Chelsea in the Premier League and facing a tough task to challenge the leaders, Van Gaal described winning the FA Cup as the "shortest way to success".
"We are very interested [in winning it]," he said. "In the Netherlands, the FA Cup was shown on television at a time when it was not common to show matches from other countries.
"We have known for many years that the FA Cup is one of the most important competitions in football."