He watched a player in Sparta Prague's Champions League qualifier against Ferencvaros, but the player being watched had a poor game.
"It was a complete waste of time. The guy I was watching was very disappointing," said Blackwell.
"Sam (Ellis) has tremendous experience and lots of contacts.
"Over the last six years with Burnley he has featured four times in the promotion race, so he has been working at the right end of the table and his knowledge is invaluable."
"It was a complete waste of time. The guy I was watching was very disappointing," said Blackwell.
"Sam (Ellis) has tremendous experience and lots of contacts.
"Over the last six years with Burnley he has featured four times in the promotion race, so he has been working at the right end of the table and his knowledge is invaluable."