Williams, an Alabama product, will visit the 49ers' Santa Clara facility on Tuesday, according to Ian Rapoport of NFL Network.
Sweat, out of Mississippi State, will also visit the 49ers this week, according to Alex Marvez of SiriusXM NFL Radio.
Williams might be an option for the 49ers with the No. 2 overall pick. The team is reportedly enamored with the talented interior defender. Although, there is still a lot of fan pressure for San Francisco to draft an edge rusher like Nick Bosa of Ohio State should the Arizona Cardinals pass on him.
Sweat, a talented pass rusher, could be an option if the 49ers trade down out of the No. 2 spot. No NFL team has approached San Francisco about a potential trade, according to head coach Kyle Shanahan, but the possibility remains.
The 49ers, like each NFL team, are permitted to host up to 30 players for official pre-draft visits at the team's headquarters. Unlike local prospects, those players are not allowed to work out for the team.
H/t to Patrick Tulini on the Sweat info
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