Vincent Kompany is very familiar with the midfielder, after Cullen made 40 league appearances under the Belgian at Anderlecht last season.
Kompany signed Cullen from West Ham two years ago after spending 15 years with the London club, though he only managed a handful of appearances for his boyhood team.
Now the 26-year-old is set for a medical today after a fee in the region of €3/3.5m was agreed to bring him back to England.
Cullen will join Scott Twine, Luke McNally, CJ Egan-Riley, Taylor Harwood-Bellis and Samuel Bastien as the Clarets’ summer signings.
Here are today’s rumours...
1. Blackburn Rovers target Liverpool outcast
Former Preston North End defender, Ben Davies, could be set for a return to the north west, with Blackburn Rovers keen on signing him. The Liverpool centre-back spent last season on loan with Sheffield United. (Football League World)
2. Reading favourites to sign ex-Barnsley striker
Reading are reportedly in pole position to snap up released Barnsley striker, Victor Adeboyejo. The 24-year-old scored three goals as the Tykes were relegated to League One last season. (Football League World)
3. Watford set to miss out on 11-goal midfielder
Watford are reportedly set to miss out on Aberdeen midfielder Lewis Ferguson, with the Scotland international set to join Bologna in a £3m deal. Millwall had also been keen on the 22-year-old. (Sky Sports News)
4. Fulham look to capture Coventry City star
Fulham are said to be eyeing a summer move for Coventry City midfielder Gustavo Hamer. It is thought that the newly promoted club would have to fork out over £10 million to sign the Brazilian. (The Sun)