The duo spent time with one another at the Yorkshire club.
Ahmed Kashi of Charlton Athletic (L) and Lewis Cook of Leeds United in action
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