Tottenham manager Andre-Villas Boas has hit back at Harry Redknapp over the QPR boss' recent assertion that "only a real dope" could fail at Chelsea.
The Portuguese was sacked by the west London club halfway through last season, with Roberto Di Matteo going on to lift the Champions League and FA Cup as his successor.
Upon being informed of the jibe from the 65-year-old ahead of the managers going toe-to-toe this weekend, Villas-Boas sent his own barb at Redknapp.
He told reporters: "Only if you manage the club can you find out. You have to be able to access a club like that to experience it.