Manchester City, Juventus and Barcelona will have home advantage for the crucial second legs of their Champions League last-16 ties after a UEFA ruling on Thursday.
Their respective clashes against Real Madrid, Lyon and Napoli are all on a knife edge after tight first games.
There had been talk of the return games possibly being played on neutral territory, as European football's governing body deals with how to finish its 2019-20 competitions amid the COVID-19 pandemic.
The Champions League will be played to a conclusion in Portugal from the quarter-final stage onwards, and the Europa League will conclude similarly with its final rounds being played in Germany, with each competition aiming to complete by the end of August.
UEFA said it considered the "principle of sporting fairness" in reaching its decision regarding the last-16 ties that had started but were unresolved in each competition.
That means Manchester City will defend their 2-1 lead over Real Madrid at the Etihad Stadium, Juventus will welcome Lyon to Turin, chasing a deficit after losing 1-0 to the French side in the first game, and Barcelona and Napoli will play again at Camp Nou after a 1-1 draw in Italy.
Bayern Munich, who lead Chelsea 3-0 after a successful trip to London, will take on Frank Lampard's side at the Allianz Arena.
The same rule will apply in the Europa League, although two last-16 ties in that competition have yet to begin and have been moved to Germany, where they will be played as single-leg fixtures, with Inter facing Getafe and Sevilla playing Roma.
UEFA said in a statement: "Consistent with the principle of sporting fairness and considering that current conditions - all clubs due to play at home the return leg of the round of 16 are currently playing the remaining matches of their domestic leagues in their own stadiums and that travelling is possible without restrictions for the visiting clubs – the UEFA executive committee decided that the remaining UEFA Champions League and UEFA Europa League round of 16 second-leg matches will be played at the home teams' stadiums.
"UEFA will continue to monitor the situation and reserves the right to reassign any such matches to the venues of the final tournament of the relevant competition should new events occur that would make it impossible to play one or more matches at the original venues."
UEFA said it would announce fixture details after Friday's quarter-final draws at its Swiss headquarters.
The governing body also said all its matches would be played behind closed doors until further notice.
"UEFA will monitor the evolution of the situation and advise on any full or partial lifting of restrictions at the appropriate time," its statement added.