Stoke City will have to pay Liverpool £500,000 if they finish in the Premier League top 10, as part of the Joe Allen deal.
Allen signed for Stoke in a deal worth £13 million in July and the club will fork out an extra chunk of money should they claim a place in the top half of the table.
The Wales international has impressed at the Bet365 Stadium this season, and manager Mark Hughes has backed the midfielder to make a big impression against his former club on Saturday.
Allen’s departure from Anfield in the summer polarised opinion among supporters, after he chose to leave due to limited first-team appearances. But Stoke are hoping Allen will guide the club towards the top 10 and trigger another instalment in the transfer.
Hughes said: “There’s always that motivation to show them there’s life in you as a player and I think that certainly comes to the fore when you go up against them.
“I think there’s the thinking that people think when you leave a top club, you’re at the end of your career to a certain extent and you’re on a downward spiral. But I didn’t take that view when I left Man United – I didn’t want to be seen as seeing out the rest of my career to a certain degree.
“Joe has come here and he’s playing week in, week out so he’s got a better platform to show people what he can do.”
Stoke have dropped into 12th after three successive defeats but could jump to ninth if they beat Liverpool and other results go their way.