Beckford sent the 9,000 travelling supporters into ecstasy at Old Trafford as his first-half goal helped secure a famous third-round win over Manchester United.
But obviously, being the toast of the majority of the football fans in the country, he could have put himself in the Premiership shop window ... and that supposed to transfer to St James' Park could be put on ice.
Leeds chairman Ken Bates is wary of the striker leaving for nothing, and Grayson is under no obligation to sell, especially now Leeds have banked a tidy sum from his exploits.
Grayson insists, it is by no means certain Beckford will leave.
Simon Grayson: "There are three scenarios.
"He can either sign a new contract now, or we can keep him until the end of the season and he leaves then. The worst-case scenario is that we are offered some money now that is too good to turn down.
"But we would have to have replacements lined up if that was to happen."
"He showed what he is all about. He worked hard for the team and got his opportunity.
"That is five goals in the last three games now. That is a big commodity.
"We are not looking to sell him but money talks with any player.
"I knew as soon as the window opened there would be a lot of talk about him.
"We don't want him to leave unless it is the best thing for him and, long term, the football club. But, if we do let him go, we won't let him go on the cheap."