1. News Corp
2. Time Warner
I'm quoting from my previous post here with some modifications why these 4 players are after Digg:
News Corporation - Newscorp would love to have this esp; after their acquisition myspace has lost traffic/users and momentum to Facebook. And as a media company it makes sense to have the most popular portal for news/technology/current affairs to be in their armour.
Microsoft - Microsoft will be the obvious choice because Microsoft is lagging in this Web 2.0 phenomenon. There hasn't been any decent/buzzing service offering by Microsoft in this space. If this comes on board, it will provide them a kick-start, which they are hoping for a while. Microsoft has got all the ingredients the to make this happen. Only problem i see is they are offering less money than what Google is offering and they are tied with Yahoo acquisition.
Time Warner - Time warner group which own Netscape will be other contender. Netscape has launched their portal on digg style but is not popular as digg is. Netscape previously asked top digg contributors to join and get paid for their contribution. Netscape would definitely like to acquire this.
Google - If nobody can buy digg than Google will definitely try. It will be more of a strategic move, to not to allow, Microsoft or News corp to buy this. Google can pull this off. Also Kevin Rose would love to be part of Google rather than Microsoft.
I can think of only these 4 contenders, what do you think? is there any other company (media) which might be interested in?