yh i am newcastle and i was going to get taken over by a rich qatar millionaire bt dah deal fell through and we were bought by a english businessman who got us in a worse situation
It all depends of what kind of a takeover it is. If it's from within, a director becomes chairman and that's about it.
When an outside party buys the club, it can be from a fan group to a business tycoon.
The benefit is in the richness of the new owner. You might get a nice transfer fund.
On the downside you might get sacked for no apparent reason...