Allardyce left the Stadium of Light to become England manager last week.
England manager Sam Allardyce after his first press conference
Sam Allardyce has sent a message to Sunderland on Twitter, five days after leaving the Stadium of Light to become England manager.
The Mackems were criticised for failing to thank Allardyce - or even wish him luck - in their initial statement on Friday, shortly before his appointment was confirmed by the Football Association.
Allardyce in his final game as Sunderland boss
However, it does not appear to have left a sour taste in Allardyce's mouth, as the 61-year-old took to social media for the first time as England boss.
I am truly honoured to be the new @England manager! Looking forward to getting started & can't wait for the Slovakia game on September 4th.— Sam Allardyce (@OfficialBigSam) 27 July 2016
Allardyce masterminded Sunderland's survival last season, having taken over last autumn with three points from a possible 24 to their name.
Sunderland finished the season on 39 points
Even sweeter was the fact they survived at the expense of fierce rivals Newcastle United - making the veteran boss's departure all the more difficult to bear.
The Mackems acted swiftly to replace him however, announcing the appointment of former Everton and Manchester United manager David Moyes the following morning.
New Sunderland boss David Moyes
The Wearside cub are yet to add to their playing squad this summer and the responsibility now lies with the Scot, with over a fortnight to go until the new season begins.