The duo spent time with one another at the Yorkshire club.
The performance of Lewis Cook was a big positive on an otherwise disappointing day for Bournemouth.
Eddie Howe's side went down 3-1 at home to a star-studded Manchester United side as goals from Juan Mata, Wayne Rooney and Zlatan Ibrahimovic put the visitors 3-0 up.
Leeds United’s Lewis Cook scores their first goal
Adam Smith reduced the arrears on 69 minutes but it proved a mere consolation for the Cherries, who had the 19-year-old former Leeds United man in midfield.
Cook, who joined from Leeds in a potential £10 million deal (according to The Guardian) looked very impressive on his debut and lasted 82 minutes, before being replaced by Max Gradel in a change which will have hurt some Whites supporters even more.
He will not have been short on congratulatory messages after checking his phone at full time, and among the well-wishers was Dominic Poleon.
Dominic Poleon - Leeds United in action against Daniel Ayala - Nottingham Forest
The pair spent four years together at Leeds at youth and senior level, and the 22-year-old - now with AFC Wimbledon - was complimentary towards his old colleague.
Bournemouth's Lewis Cook in action with Valencia's Alvaro Medran