John Hartson is in no doubt Brendan Rodgers' return will bring some tactical changes.
The new Celtic gaffer is back at Parkhead for a second spell following Ange Postecoglou's exit for the English Premier League with Tottenham. The 57-year-old enjoyed great success with his 4-3-3 'Angeball' system and remained stubborn with his formula. It proved hugely successful with five trophies from six domestically including a Treble in his final campaign.
But Hoops hero Hartson expects Rodgers to tweak with the set-up of the previous couple of years and also bring in two or three players top quality additions.
