Leicester boss Claude Puel will lead many of his squad to Thailand for Vichai Srivaddhanaprabha's funeral after Saturday's game at Cardiff.
"So, sadly the helicopter of Vichai Srivaddhanaprabha crashed outside the King Power Stadium after the West Ham game, 27th October 2018", Greaves wrote.
"It's going to be tough and very emotional and what the lads wanted to do was play this game and honor the man himself".
The elaborate funeral of Leicester City's Thai owner and duty-free mogul Vichai Srivaddhanaprabha began at a Buddhist temple in Bangkok this evening, as members of Thailand's business and political elite came in black mourning garb to pay tribute to the well-connected billionaire.
Numerous squad, including Vardy, Morgan, and goalkeeper Kasper Schmeichel, have spoken of the huge impact the Thai billionaire had on them and the club.
"I feel proud. It's been a really tough week for everyone".
And it appears the referee himself was gutted in the knowledge he had to stick to the letter of the law and grimaced after Gray run past him and took off his shirt.
The tears shed by Schmeichel summed up the mood at Cardiff as a huge banner, a Thai flag with "RIP Vichai" and the Leicester badge, was unfurled before the game. I am immensely proud to have known him.
"Because Leicester can show they could be champion of the Premier League, that's why anything in Thailand can happen in the future".
On the hour mark, Leicester fans delivered another tribute to their late owner when they sang "There's Only One Vichai", waving their scarves aloft.
Tottenham, in fourth position, moved within three points of Liverpool despite conceding two second-half penalties in a 3-2 win at Wolverhampton.
Marcus Rashford scored a stoppage-time victor as Manchester United came from behind to win 2-1 at Bournemouth.
There was a tense finish as Wolves' Ruben Neves scored a 68th minute penalty before team-mate Raul Jimenez netted with another spot-kick in the 79th minute.
Callum Wilson's 11th-minute opener for Bournemouth was cancelled out by Anthony Martial's 35th-minute effort as United survived a series of missed chances from the hosts.