Samples had this post on his Twitter account on Tuesday morning.
Rashaad Samples ? @ 10justscored 3h 3 hours ago
Thankful for everything Oklahoma State has done for me time to start a new chapter.
Samples was a highly touted member of the 2013 recruiting class coming out of Dallas (Skyline), Texas where he earned All-America honors and caught 62 passes as a senior for 1,072 yards and 23 touchdowns. His junior season he had 65 receptions for 1,369 yards and 19 touchdowns.
He was a very dynamic player and personality as even cheerleaders from the opposing team would ask to take pictures with him after games.
Just guessing that two programs with new coaches and high powered offensive-minded head coaches like Houston and SMU might end up being destinations for Samples. Actually, there has been one source tell me that Houston was likely for Samples.