FOXBORO, Mass. — Stephen Gostkowski entered final week because the second-oldest participant on the New England Patriots’ roster behind quarterback Tom Brady. He’s now the third-oldest following the return of a well-known face to Foxboro: 38-year-old tight finish Ben Watson. Gostkowski, 35, is one among simply six Patriots gamers who have been round for Watson’s first stint in New England, which lasted from 2004 via the 2009 season. After stints with the Cleveland Browns, New Orleans Saints and Baltimore Ravens, Watson reunited with the staff that drafted him final Friday, signing a one-year deal to assist the Patriots offset the lack of Rob Gronkowski. “I just remember walking in when I was a rookie, and I was like, ‘Man, that dude looks