The future of the Vikings' defensive line might not look so unsettled in a few months.

The team's top three defensive ends -- Jared Allen, Brian Robison and Everson Griffen -- are scheduled to become unrestricted free agents next spring, as is defensive tackle Kevin Williams. There is plenty of time to re-sign one or more of the players, especially when teams expect to be flush with cash from the new TV deal that begins in 2014.

But the draft that begins Thursday, April 25, is replete with defensive linemen and offers the Vikings a chance to opt for younger alternatives.

"This is, at least in my opinion, one of the strongest defensive tackle classes that have came out in a while, and with the defensive ends and some pretty good offensive linemen also," general manager Rick Spielman said at the NFL scouting combine in February. "There (are) a lot of very, very good football players in this draft that are going to have a major impact on a lot of teams."

The Vikings have other needs to fill early in the draft -- middle linebacker, cornerback and wide receiver among them -- so they might be able to spend their two first-round picks on those before grabbing a defensive lineman. But the number of talented defensive tackles, in particular, might lead them to look for Williams' eventual replacement.

Here is a look at some of the defensive linemen in this year's draft:

Top of the class: You'll see a handful of defensive tackles and ends near the top of
most mock drafts, with Florida's Sharrif Floyd projecting to go as high as No. 2 to the Oakland Raiders. The 20-year-old could be the perfect fit for a team looking to put a tackle in the middle of a 4-3 defense -- like the Vikings -- and while he could be raw, his strength and quickness are tough to bypass. Utah's Star Lotulelei was projected to be the first defensive tackle taken until concerns surfaced at the combine about a possible heart issue, but doctors have cleared him and he could find his way back into the top 10.

At defensive end, the player everyone is talking about is Brigham Young's Ezekiel "Ziggy" Ansah, a 6-foot-5, 274-pound pass rusher who runs the 40-yard dash in 4.63 seconds. Ansah's college production was mostly confined to his senior year, but his raw traits could make him one of the first players taken.