‘Having been seemingly dormant for weeks, discussions aimed at a swap of Buffalo Bills tailback Travis Henry and Arizona Cardinals offensive tackle L.J. Shelton were revived at the NFL owners meetings this week, and there is a decent shot the proposed trade will be consummated around draft time. The final hurdle: In addition to getting Shelton, who would replace Jonas Jennings as the starting left tackle, Bills general manager Tom Donahoe also wants to switch spots in the second round.’