Real Madrid arrive in Sofia
The team landed shortly before 12:30pm in the Bulgarian capital, where they take on Ludogorets on Wednesday.
He is the team's first ever player to score 10 goals during the opening six matchdays.
Butragueño attended the announcement of the friendly, which will be played at The Sevens Stadium.
It will be the second time the Scottish official takes charge of a match involving the Whites in the Champions League.
On 30 September 2005, the world's finest training complex was inaugurated.
Real Madrid beat Barcelona to claim the first trophy of the season in a final they dominated from start to finish, with tournament MVP Llull in sensational form (21 points).
Sergio Rodríguez was also among the award winners.