Russian national coach Hiddink took the reigns at Stamford Bridge on a temporary basis in February after the sacking of Luis Felipe Scolari .
Russian national coach Hiddink has presided over a remarkable change in Chelsea 's fortunes .
Russian national coach Hiddink took the reigns at Stamford Bridge on a temporary basis in February after the sacking of Luis Felipe Scolari and has presided over a remarkable change in Chelsea 's fortunes .