Watson is club secretary of Hereford FC and also vice-chairman of the Supporters Trust.
After his visit to the ground he spoke to BBC Hereford and Worcester.
"The stadium was everything," said Watson.
"If we didn't have the stadium we couldn't do it anywhere else in Herefordshire, it was the only place.
"To finally get hold of the stadium after all these months is absolutely fantastic.
"I've just popped down the stadium and I'm about to drive away with a box of keys.
"There are a lot of electrics to deal with, there's some sewage works that need to be done.
"One of the things we need to do to satisfy the FA is to do a test on the floodlights to make sure they are strong for the league we are going in.
"Beyond that we've got to find a manager, we've got three interviews on Sunday, another one on Monday, we've already done one.
"And he's got to find a squad.
"The hard work starts here, but it's not just going to be the six or seven on the board and the dozen or so people that have helped us get to this position.
"We've got 180 volunteers now and it will be the sum total of those 200 people who will get the football back at Edgar Street in July and kick-off the new season in August.
"The indication from the FA is that it will be step five which will be most likely the Midlands Football League, the same level as Westfields which would make an interesting pair of derbies.
"The possibility is step four which would be the Southern League South and West. If we have to start at step five then we start at step five."