Isabella Walker

The N.C.A.A. is investigating the University of Tennessee’s football program for recruiting violations involving a group of outside donors, signaling an escalation of efforts to rein in the growing influence of money flooding into college sports, according to documents and people familiar with the case.The investigation is focused on Tennessee’s high-profile donor collective, a group of alumni and wealthy boosters who support the team by channeling payments and other benefits to players. The inquiry is looking at, among other things, the group’s role in flying a high-profile recruit to campus on a private jet while the football team was wooing…