Ajax have joined the hunt to sign Super Eagles and Rangers defender Calvin Bassey this summer amid interest from numerous Premier League clubs, Starnews.com.ng understand.     Manchester United are closing in on a £46m deal for Ajax’s centre-back Lisandro Martinez and the Dutch champions are keen to spend some of their windfall on Bassey.   Brighton are also interested in the 22-year-old and both clubs are understood to have made offers for the versatile Bassey though not ones that have yet satisfied Rangers.   Rangers have put a £25m price tag on Bassey, who is equally comfortable