UEFA Friday fined Lokomotiv Moscow midfielder Dmitri Tarasov 5,000 euros (5,600 dollars) for displaying a T-shirt showing a portrait of Russian President Vladimir Putin at a Europa League match.
Tarasov was sanctioned for "improper conduct" during the February 16 game against Fenerbahce in Istanbul.
The match came as tensions ran high between the Russian and Turkish governments after Turkish forces shot down a Russian warplane in November.
Players "must not reveal undergarments that show political, religious, personal slogans, statements or images, or advertising other than the manufacturer logo," UEFA said.
Tarasov had removed his jersey after the final whistle of the match to reveal a T-shirt showing a portrait of Putin and the words "the most polite president."
Lokomotiv last month fined Tarasov over the incident. Reports in Moscow said he was been fined 300,000 euros plus bonuses.