Per a report from Fox Sports’ Alex Marvez, the Buffalo Bills and Mario Williams have reached a tentative agreement, and the deal being done is definitely going to happen. News broke earlier this morning that a deal was close, and now it appears Williams coming to Buffalo is no longer speculation, but confirmed.

The Bills had announced previously that they intended to make a big splash early in free agency and be done by Friday. This impending deal with Williams illustrates that without a doubt.

Williams, the former first round pick of the Houston Texans in 2006, is widely considered one of the best defensive ends in football. He is a two-time Pro Bowler and also holds the Texans single-season sack record with 14 in 2007. He has battled the injury bug the last two seasons, but will be a major upgrade for Buffalo and he immediately fills an imminent pass rushing need, as the Bills are reverting back to the 4-3 defense this upcoming season.

Williams has 53 sacks and 241 tackles in his career.