University of Miami junior running back Mark Walton has conveyed to several UM officials that he intends to forgo his senior season and turn pro, according to a source, and a national web site reported Tuesday that he has signed with an agent. Neil Stratton of reported that Walton has signed with agent Zac Hiller, who also represents Minnesota Vikings and former FSU running back Dalvin Cook. Once a player signs with an agent, he loses college football eligibility. Hiller, reached on his cell phone, said he was in a meeting and declined to answer when asked if he had signed Walton. Walton’s season ended Oct. 7 when he sustained an ankle injury against Florida State.