Jose Mourinho sent Sam Allardyce a congratulatory text message moments after West Ham United's shock 2-1 win against Premier League title rivals Manchester City on Saturday.
The Chelsea manager's show of support for the Hammers boss came after goals from Morgan Amalfitano and Diafro Sakho secured a memorable victory over the Citizens at Upton Park, and potentially helped strengthen the Blues' position at the top of the table.
Chelsea can stretch their lead over Manuel Pellegrini's side to eight points if they successfully beat Manchester United at Old Trafford on Sunday, but Louis van Gaal will be hoping to stop Mourinho in his tracks and provide some temporary resistance to what already looks like being the Blues' trophy to lose, based on the opening eight or nine games of the 2014/15 campaign.
But, despite Chelsea's impressive start to the season, it's clear that Mourinho is still keeping an eye on his nearest title rivals, as confirmed by Allardyce in his post-match press conference yesterday.
"Jose has just texted me to say 'well done big man'," the West Ham manager was quoted saying by the Mail on Sunday. "This shows how important it was for him, never mind us.
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"He goes to Manchester United knowing his team will go and perform at their best and if they win it makes the gap even bigger.
"The result wasn't for him. It was for us and everyone at West Ham. It will benefit him if they go and get a result at Manchester United."
Mourinho's message would've been warmly received by Allardyce, particularly after the Premier League pair seemingly fell out after the Portuguese tactician's comments about West Ham playing '19th century football' last season.
However, it looks as though the Chelsea manager's perception of the east London club has changed following their positive start to the new campaign, which has lifted them to fourth place in the league.