'Sorry, Alex!' Jurgen Klopp apologises to Ferguson for 4am text after Liverpool's title win

Former Manchester United manager sent a congratulatory message after the Reds ended their 30-year wait to be crowned English champions

Liverpool superstar Mohamed Salah wears an Egyptian flag around his shoulders as he celebrates with Dejan Lovren and the trophy after winning the Premier League. AFP

Dejan Lovren, Mohamed Salah and Xherdan Shaqiri. AP

Liverpool's Dejan Lovren (left) and Mohamed Salah celebrate with the Premier League trophy. PA

Liverpool manager Jurgen Klopp poses with the Premier League trophy. AFP

Liverpool players celebrate with the Premier League trophy. PA

Mohamed Salah wears an Egyptian flag as he celebrates with Dejan Lovren and the trophy. Reuters

Liverpool fans celebrate outside Anfield as fireworks are set off. AP

Liverpool fans celebrate outside Anfield. Getty

Manager Jurgen Klopp celebrates with members of his backroom staff. Getty

Liverpool fans celebrate outside Anfield stadium. Getty

Andrew Robertson and Trent Alexander-Arnold celebrate. Reuters

Joe Gomez, Georginio Wijnaldum and Virgil van Dijk. Getty

Liverpool's Fabinho and teammates. AP

Liverpool players celebrate with the Premier League trophy. Getty

Kenny Dalglish with Liverpool's Mohamed Salah on the podium after winning the Premier League. Reuters

Liverpool fans celebrate outside Anfield. Getty

Liverpool's Egyptian midfielder Mohamed Salah receives his Premier League winner's medal. AFP

Liverpool captain Jordan Henderson and his teammate Virgil van Dijk with the Premier League trophy. EPA

Liverpool players and staff celebrate. AFP

Liverpool players pose with the trophy. EPA

Jordan Henderson and his teammate Virgil van Dijk. EPA

Liverpool fans celebrate with flares outside the stadium. Reuters

Liverpool celebrate with the trophy. Reuters

Fans celebrate outside Anfield. Getty

Liverpool fans celebrate outside Anfield stadium. Getty

Liverpool fans celebrate outside Anfield stadium. Getty

Liverpool fans celebrate outside Anfield. Getty

Liverpool fans celebrate outside Anfield stadium. Getty

Liverpool fans celebrate outside The Kop stand at Anfield. Getty

Liverpool fans celebrate outside Anfield stadium. Getty

Fabinho, left, goalkeeper Alisson, right, and Roberto Firmino, all from Brazil, celebrate with the Premier League trophy. AP

Jugen Klopp has revealed he apologised to Alex Ferguson after waking up the former Manchester United manager in the early hours of the morning during Liverpool's Premier League title celebrations.

Ferguson sent a congratulatory message to Liverpool manager Klopp after the Reds ended their 30-year wait to be crowned English champions following Manchester City's defeat at Chelsea in June.

When Klopp's celebrations with his players at a Liverpool hotel had finally petered out, it was approaching 3.30am but the German was still keen to reply to Ferguson's message.

He did not anticipate the 78-year-old Scot would still have his phone on by his bedside when he sent his response, with Ferguson later revealing Klopp had accidentally woken him up.

"The problem was that I came back late in my room that night and I couldn't sleep immediately so I went through the messages I got and one of them was from Alex Ferguson," Klopp told reporters ahead of Liverpool's opening game of the new English top-flight season against Leeds United on Saturday.

"I just replied in a very polite way I think. It was about 3.30am-4am and I didn't expect him to have his phone next to his bed. I didn't want to wake him up. If that happened then sorry, Alex!

"But since then we have not been in contact. He is still the former Man United manager and I don't think he wants to talk to me too much about the success of Liverpool.

"He respects it but it's not his favourite thing to watch on television!"