Brook and Saldiva square off at Sheffield's Motorpoint Arena knowing that the victor is guaranteed a world title bout, and Brook has acknowledged that he is expecting a tough test against the experienced Argentine boxer, who has won 41 of his 43 fights.
Brook said: "Saldiva is no walkover and it is going to be very tough.
"I wouldn't want it any other way. I want to excite the fans and they are going to go home with a smile on their face."
The 26-year-old is currently unbeaten in 28 fights.