Spurs are favourites to win the match in 90 minutes, priced at 5/4 (2.25), but plenty of punters will no doubt be considering the underdogs with Manchester United chalked up as 23/10 (3.30) chances to win in normal time.
What's more, this offer is fully paid in cash, not free bets. The maximum bet per customer is £5 and any additional returns will be credited after the match has finished should United win the match.
To take up the 6/1 (7.0) simply follow the links provided, click the link on the next page and the special selection will be automatically added to your betslip. Register for your new account then place a £5 bet on the market.
Honours were even between the two sides in the Premier League, with one win apiece and while Spurs will be playing in familiar surroundings, Mourinho has already picked up plenty of silverware since arriving at Old Trafford.
United won the League Cup at this venue last season, as well as the Europa League and Community Shield last term.
That kind of experience in big matches will undoubtedly be an advantage for the side that come into this match having won six of their previous seven Premier League games.
Tottenham are six points worse off than Saturday's opponents in the top-flight so the opportunity to get 6/1 (7.0) on Manchester United to win with all returns being paid in cash is expected to prove extremely popular. Especially with the Red Devils bouncing back to winning ways against Bournemouth while managing to rest several of their first-team regulars.
It's not just new customer offers that dabblebet players can enjoy either. Long running promotions such as Acca Club and the In-Play Football Weekender offer plenty of value for fans of the beautiful game once they've joined the online bookmaker.