Chelsea boss Jose Mourinho congratulated Slaven Bilic on landing the West Ham job this week via text.
Bilic revealed that, via former Chelsea player Demba Ba who he coached at Besiktas, Mourinho obtained his number before sending him a short message by text.
"I was shocked to get a message from Jose Mourinho," Bilic told The Sun.
"Demba Ba texted me to say Jose asked him for my number. It was great. I felt 'wow'. He said 'I'm glad you're here and welcome to England'."
"It was really flattering. The guy is class, what can I say."