Blackpool manager Jose Riga is aware that he needs 'more players' if Blackpool are to steer a course to safety.
Stuart Pearce has refused to divulge the identity of those he has lined up as loan targets for Nottingham Forest.
Dawson was released after 10 years at the club and subsequently joined former side Scunthorpe.
The Iron have a League Two fixture at Bristol Rovers on the same date as the Betis match, August 10, but Dawson has been given permission to play in his own testimonial instead.
The 34-year-old played 317 times for Hull and was part of four promotion-winning sides.