Southampton’s focus this transfer window has been primarily on keeping players rather than buying them, but an exciting transfer link has now emerged. Fresh off the back of breaking an 123-year club record by going 20 league games unbeaten by beating Swansea City 3-1 on Saturday, Russell Martin is in no mood to slow down. Kyle Walker-Peters has been Southampton’s best player this season and is unsurprisingly being linked with a big move, with Chelsea reportedly showing interest. Che Adams scored again on Saturday, taking his fine run of goalscoring form to five goals in his last six games amid…