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.
Lorenzo Insigne and Vlad Chiriches face a race to be fit in time to feature for Napoli when they travel to Arsenal on April 11.
Pablo Machin has paid the price for Sevilla's Europa League elimination, having his tenure cut short as Joaquin Caparros steps in again.
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 will face Arsenal in the Europa League final after prevailing on penalties against Eintracht Frankfurt in London on Thursday.