Gallas will return to the Emirates Stadium for the first time since completing one of the most controversial transfers of recent times by joining their arch-rivals Spurs.
Crossing the north London divide this summer has all but guaranteed the former Gunners captain a hostile reception from the Emirates Stadium crowd.
But Redknapp cannot understand anyone wanting to jeer the 33-year-old, who was released by Arsenal at the end of last season.
He said: "You play for a club, play well for them: you should get a good reception, surely? What do they want to give them abuse for?
"He got freed from Arsenal and I took him to Tottenham and he wants to play football. He's come here and played, done great for us."
Source: PA
Source: PA