Man City held their bus parade through Manchester on Monday to celebrate their first league title in 44 years and during that parade, Carlos Tevez held up a presumably fan-made sign depicting a tombstone that read "RIP Fergie."
In 2009, Ferguson was asked if Man United would ever go into a Manchester derby as underdogs. Ferguson responded, "not in my lifetime." So after Man City edged out Man United to win the Premier League title on the final day of the season, the sign was likely a (crude) reference to that. And Tevez, who played for Ferguson before joining City, seemed to enjoy it. Even though his inability to speak English is well known.
Meanwhile, Ferguson's comments about City's victory are probably an accurate reflection of how he feels about Tevez and his sign. From Soccernet:
"They can go on as much as they like - that's what you would expect - but the history of our club stands us aside," Ferguson said. "We don't need to worry about that. I think we have a rich history, better than anyone and it'll take them a century to get to our level of history."
Coincidentally, Carlos Tevez seemed to be resting in peace when he abandoned Man City after a misunderstanding with Roberto Mancini in the middle of the season and came back just in time to collect a winner's medal.
UPDATE: Man City were quick to issue an apology. From The Mirror:
A City spokeswoman said: "The creation of the tasteless material is in itself reprehensible and in accepting and brandishing it, Carlos has made a significant error of judgement.
"The club wishes to express its sincerest apologies to Sir Alex Ferguson and Manchester United Football Club for any offence or distress caused." [...]
Tevez, who spent two years at Old Trafford before leaving for City in 2009, said: "I got carried away in the excitement of the moment and I certainly didn't mean any disrespect to Sir Alex Ferguson, who I admire as a man and a manager."
So on the day Man City celebrated beating Man United to their first league title in 44 years, they had to issue a public apology to their rivals. Now they're probably extra glad they allowed Tevez back into the team after his five-month midseason absence.