Wyoming tight end Jacob Hollister, Grambling wide receiver Chad Williams and Old Dominion defensive lineman Rashaad Coward visited the Texans this week, according to sources not authorized to speak publicly.
An All-Mountain West Conference selection, Hollister caught 32 passes for 517 yards and seven touchdowns last season.
He caught 26 passes for 355 yards and three touchdowns last season.
At his Pro Day, the 6-4, 239-pounder ran the 40-yard dash in 4.64 seconds and had a 36 1/2 inch vertical leap and a 10-1 broad jump.
Williams caught 90 passes for 1,337 yards and 11 touchdowns last season and was a second-team All-American and a first-team All-Conference selection.