26 April,2012 08:13 AM IST | | AFP
Di Matteo, himself a former Chelsea midfielder, has presided over an impressive turnaround in Chelsea's fortunes since replacing the sacked Andre Villas-Boas just over a month ago.
Grant, sacked by owner Roman Abramovich after Chelsea lost the 2008 Champions League final to Manchester United in a Moscow penalty shoot-out - the closest the Blues have come to winning the European Cup - told BBC Radio Five Live: "Roberto deserves one more year, at least, because he has done a good job with this team. To come to the final with this team is unbelievable."