The Black Cats have been busy in recent summer transfer windows, signing six players under Gus Poyet in 2014, with 11 new faces arriving under previous incumbent Paolo Di Canio in 2013.
Despite the high influx of new additions at the Stadium of Light, few of their signings could be considered successes, with the likes of Valentin Roberge, Charis Mavrias and Vito Mannone still at the club despite rarely, if ever, making first-team appearances.
Advocaat feels that the club’s previous failings in the transfer market have had a lasting effect, and the boss says he “can understand” the hierarchy wishing to offload players before adding to the five that Advocaat has signed so far.
“We had a big past here and I know a little bit about the salary of players – average players, lower than average players – and that’s crazy,” he told the Sunderland Echo.
“People who bought those kind of players for those transfer fees and gave them those salaries didn’t care about the club.
“And then I can understand our owner when he thinks, ‘I spent a fortune’ and now where are they playing, or not playing? I can totally understand him.
“Supporters have to understand that before you can have a new start, you have to get rid.”