Sheffield Wednesday owner Dejphon Chansiri has congratulated Sheffield United on clinching promotion to the Premier League.
The Blades' confirmed their return to English football's top flight after a 12-year absence when they beat Ipswich last weekend and third-place Leeds drew with Aston Villa.
Sheffield Wednesday will remain in the Sky Bet Championship after narrowly missing out on a play-off place but Chansiri put that disappointment to one side to wish their city rivals well.
"Few things in life unite and divide opinion like football," he said. "But one thing at this stage of every season is undebatable and I would like to offer the warm congratulations of everyone at Sheffield Wednesday to everyone at our neighbours Sheffield United for their achievement of promotion.
"We may be rivals but we are friends of the same city that holds such unique tradition in the football world.
"Recognition in the Premier League can only benefit Sheffield and we wish United well, whilst promising our loyal supporters that we will be giving our absolute best to ensure Wednesday will be tasting the same success this time next year.
"We must also congratulate Norwich City on their promotion and offer our commiserations to Ipswich Town, Bolton Wanderers and Rotherham United. We wish you a speedy return to the Championship."
Manchester United have also congratulated Sheffield United on winning promotion back to the Premier League.
A statement on the United website read: "Manager, and Sheffield United fan, Chris Wilder has galvanised a squad that, on paper, many would not have tipped to have gone on and achieved the level of success they have.
"United loanee Dean Henderson has kept more clean sheets than any other goalkeeper in the second tier while, at the other end of the pitch, Billy Sharp is one of the leading scorers with 23 goals.
"With a squad assembled on a tight budget, it is going to be interesting to see how the Blades will adapt to life in the top tier."