Calum Clark set to leave Northampton Saints at end of Premiership season

• Versatile forward tipped to join European champions Saracens• The 27-year-old has found first-team chances limited at SaintsThe Northampton and England flanker Calum Clark is to leave the club at the end of this season. The versatile forward, who is equally comfortable on the blindside or openside and has filled in at lock and No8 in the past, is likely to join the Premiership and European champions Saracens, according to reports.Clark, who was Northampton’s 2014-15 player of the season, won a solitary international cap in a warm-up match against France before the 2015 World Cup but was a re…