Jermain Defoe knows what it takes to overcome Celtic in the blue of Rangers. The legendary former Premier League striker, 41, had one last hurrah at Ibrox at the tail end of a special career when he turned up under the management of Steven Gerrard. And whilst things didn’t always go to plan in Glasgow during Jermain Defoe’s spell at the club, the striker achieved what he set out to in Govan. Rangers lifted 55, halted 10IAR and Defoe played his role in that legendary invincible season of 20/21 in Glasgow. With Rangers’ Scottish Premiership D-Day almost upon us, many of Jermain Defoe’s former te…