Rohan has a feeling that Josuke is cheating at cee-lo, and cuts off his own pinky. If he is unable to figure out Josuke's trick in the next round, he says he will pay him 2 million yen to have him use Shining Diamond to fix his finger. But if Rohan does figure it out, he says he'll take Josuke's pinky instead. He even calls Tamami to act as a mediator, having him use his Stand ability so Josuke can't play fairly the next round, either.
If he said that to you, 
please don't think anything of it.
إذا قال لك أي شيء عن هذا فلا تأخذه على محمل الجدّ
Wenn er dir das erzählt hat,
denk nicht länger drüber nach.
Si te lo dijo, no le prestes atención.
Si te lo dijo, no le prestes atención.
Si c’est le cas,
n’y fais pas attention.
Se l'ha detto anche a te,
ti prego di far finta di niente.
Se ele te contou essa história,
só ignore.