Southampton are winless after seven Premier League games and manager Russell Martin will be starting to feel the pressure. Next up for Southampton after a two week break for intentional football is a massive game against Leicester City on Saturday. Russell Martin knows three points are a must as he looks to turn around Southampton’s awful start to the season. The Saints made 14 first-team signings this summer and each of those arrivals have endured mixed fortunes so far. READ MORE: Grading all 14 of Southampton’s first-team summer signings as one player gets a 2/10However, here are three playe…