Lyon president Jean-Michel Aulas has congratulated Paris Saint-Germain counterpart Nasser al-Khelaifi on managing to lure Neymar to France as the record-breaking transfer nears completion.
PSG are expected to push through a €222 million deal for the Brazil star despite LaLiga attempting to block his departure from Barcelona.
Aulas, who has owned Lyon since 1987, previously labelled his rivals' pursuit of Neymar a "risky" move which could harm the French football economy.
And on Thursday he posted about the transfer on Twitter, with his kind words of praise coming with an apparent caveat.
"Congratulations to Nasser for the realization of this worldwide unique operation," he wrote.
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"I'm impatient to know about the real costs of the operation."
Despite his reservations, Aulas later said Neymar's switch to the French capital would be an "immense" boost to the profile of Ligue 1.
Lyon finished fourth in France's top tier last term after ending the two previous seasons as runners-up to PSG.