Gillingham manager Mark Stimson admitted he faces an uphill battle to keep prize asset Simeon Jackson at Priestfield.
Jackson has started the new season where he left off last year, netting four goals in two games.
And Stimson is aware of interest in the player from the country's top leagues, after several scouts were deployed to keep an eye on his progress in Tuesday's defeat of Championship side Plymouth.
"It was one of the best performances I have seen in his overall game and there were some big scouts here unfortunately," Stimson said after Jackson netted in Tuesday's win.
"If I was a scout working for the teams which were here, I would be ticking all the boxes.
"There are certain scouts names who I know who are quite senior and if they are at a game, they are watching someone with a view of seriously looking at someone.
"If someone actually comes up with a bid of some sorts then it could become a little bit sticky, but he is happy and he is playing with freedom, a smile on his face and is scoring goals. We just have to try and maintain that.
"We desperately don't want to sell him because he is a major part of what we've got. I don't think Manchester United wanted to sell their main man but unfortunately money talks."