John Calipari is tasked with having to build his first roster at Arkansas from the ground up. Left with no scholarship players after the Eric Musselman era, the new Razorbacks head coach is going to have to approach the transfer portal and high school recruiting space with the knowledge that he’s going to be starting from scratch. “I met with the team — there is no team,” Calipari joked during his introductory press conference on Wednesday. “So now I’ve got to — Hunter’s really, extremely confident — but we’ve got to get a roster together and some of it is a little bit of everything. But we wi…