Ajax have been fined £8,500 by Uefa for a banner displayed by supporters during their 3-1 victory over Manchester City in the Champions League at the Amsterdam ArenA in October.
The home fans unveiled a banner depicting a cartoon of a sheik holding a bag of money with the words 'Against Modern Football' written underneath it.
The message was aimed at Manchester City's wealthy owner, Sheikh Mansour Bin Zayed al-Nahyan, a member of Abu Dhabi's ruling family, who has invested large sums of money into the club in the past couple of seasons.
Another slogan seen at the stadium read: "€80 [£67] for the away section is ridiculous", while other banners also criticised Chelsea, Red Bull Salzburg and Red Bull Leipzig.
Uefa's official reason for fining the Eredivisie side is for a "display of a provocative and inappropriate banner".
Manchester City lost the match and finished bottom of Group D, with the Dutch side finishing third and earning qualification for the Europa League as a result.