Enrique Cerezo was asked whether Real Madrid midfielder and Napoli target James Rodriguez is set for a move to Atletico Madrid.
Slavia Prague have been punished for a series of incidents during their Europa League tie against Genk last month.
A complaint lodged by Chelsea regarding alleged racist abuse of Callum Hudson-Odoi at Dynamo Kiev will be investigated by a UEFA inspector.
Friday's Europa League draw saw the two Premier League sides kept apart in the last eight. Take a look at the full list of fixtures.
Chelsea and Arsenal were kept apart in the Europa League quarter-final draw, with the Gunners facing Napoli in the last-eight.
If Arsenal and Chelsea are drawn at home on the same day in the Europa League, the Gunners will have their fixtures reversed.
Chelsea denied Arsenal a route into the Champions League with a convincing Europa League final victory over their Premier League rivals.