The striker has spent the previous three years on Wolves’ books and played four times for the first-team.
A regular goalscorer for the under-23s, Ashley-Seal featured in previous two Carabao Cup campaigns against Sheffield Wednesday, Leicester City and Aston Villa under Nuno Espirito Santo.
The 21-year-old’s one and only start for Wolves came against Manchester United in the FA Cup back in January, before he concluded the curtailed season at Accrington Stanley.
Now, the striker departs for a new challenge in League One with the Cobblers, who face MK Dons in the EFL Trophy on Tuesday evening.
All at Wolves would like to thank Benny for his efforts while at the club.