Castello Lukeba has a buyout clause in his contract worth £78 million. Liverpool sees him as a potential replacement for Jarell Quansah, who recently moved to Bayer Leverkusen.

RB Leipzig has an informal agreement with Lukeba to sell him at a lower price than the value of his buyout clause. This deal is part of Lukeba's current contract with the team, which is set to expire in 2029.

Lukeba's contract with RB Leipzig also includes a buyout clause that allows him to leave the team at a certain price. This clause is a common feature in many football contracts.

It is worth noting that a lower price for Lukeba could be agreed upon, as RB Leipzig has an informal agreement with the player to sell him at a discounted price.

Both Liverpool and Tottenham are looking to strengthen their teams with new signings, and it remains to be seen if either club will be able to secure Lukeba's services.

The transfer market is always active during the summer, with many clubs looking to make key signings. This can be a busy and competitive time for football clubs.

RB Leipzig will be keen to see Lukeba leave for a good price, given the player's value and the informal agreement they have in place.

Ultimately, the decision on whether to sell Lukeba will rest with the player and RB Leipzig.