Jose Mourinho sent words of wisdom to Chelsea legend Damien Duff ahead of their dramatic Irish league title win.
Shelbourne won their first League of Ireland Premier Division crown in 18 years on Friday night with a late 1-0 win at Derry City.
Substitute midfielder Harry Wood scored in the 85th minute after a saved free kick, sparking wild celebrations among the traveling fans.
Duff, who joined Shelbourne as coach in November 2021, saw his team finish two points clear of defending champions Shamrock Rovers.
The former Irish international had great success at club level with Chelsea as they won two Premier League titles and the League Cup.
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All three trophies were won under the legendary coach. Mourinhowho was there to inspire his former player before Friday's victory.
“I said, 'What's up with Jose?'” Duff said via Irish independent when his assistant Joey O'Brien asked him how he would motivate his team.
“'Why Joseph?' Because have we tried to build a siege mentality against the world like he did? Absolutely, it would be crazy not to take advantage of it.
“So on Monday, Tuesday, Wednesday and Thursday, there were posts on the Instagram page. Powerful lyrics, powerful words that would resonate and have meaning for tonight.
“Then in the team meeting (on Friday), there was a private message from José talking about what it takes to win a title as a team, as an individual.
“The guys were shocked. A video that was shown in the Everglades two hours before the game.”
Duff also revealed that he attempted to speak to Mourinho inside the jubilant Shelbourne dressing room with a FaceTime call.
His former boss did not respond and had to donate 500 euros to the players' celebration fund.
However, Mourinho, a three-time Premier League winner and two-time Champions League winner, still gave Duff his support beforehand.
Duff made 88 appearances in all competitions for Chelsea under the Portuguese manager from 2003 to 2006.
The winger scored 13 goals and assisted another 17, and even scored in the classic 4-2 Champions League victory over Barcelona.
Almost two decades after they went their separate ways, Duff has been able to follow in Mourinho's footsteps with a league title.