Uefa have not settled on a date for the Europa League and Champions League to re-start amid the coronavirus pandemic.
All Uefa competitions were suspended indefinitely last month and the European Championship, due to start in June, was pushed back to 2021 and the Women's Euros, slated for 2021, could be moved back to 2022.
Manchester City are 2-1 up after the first leg of their Champions League round-of-16 tie with Real Madrid and United are all but through to the Europa League quarter-finals following a 5-0 rout of LASK Linz in Austria.
The Europa League final was due to be played in Gdansk, Poland, on May 27 and the Champions League final date was originally set for May 30 in Istanbul in Turkey. Provided the European competitions can be completed, both finals will almost certainly be played well into the summer due to the spread of the coronavirus.
The statement said: "All national team matches for men and women due to be played in June 2020 are postponed until further notice. This includes the play-off matches for UEFA EURO 2020 and qualifying matches for UEFA Women’s EURO 2021. All other Uefa competition matches, including the centralised international friendly matches, remain postponed until further notice.
"Youth national team competitions: the Uefa European Under-17 Championship final tournament scheduled for May 2020 is cancelled, the Uefa European Women’s Under-19 Championship final tournament scheduled for July 2020 is cancelled.
"The Uefa European Women’s Under-17 Championship final tournament scheduled for May 2020 is postponed until further notice (as it is a qualifying competition for the FIFA U 17 Women's World Cup), the Uefa European Under-19 Championship final tournament scheduled for July 2020 is postponed until further notice (as it is a qualifying competition for the FIFA U-20 World Cup).
"The Uefa Futsal Champions League finals scheduled for April 2020 are postponed until further notice.
"The deadlines related to all 2020/21 Uefa club competitions are postponed until further notice, in particular as regards the admission process and the registration of players. Uefa will set new deadlines in due course."