Serge Gnabry "has tested positive for the coronavirus. The FC Bayern forward is okay and isolating at home," Bayern said ahead of the quarter-final, first leg tie against PSG.
"Serge has a sore throat and will probably be out as well," Bayern coach Hansi Flick said Tuesday ahead of the quarter-final, first leg at home with the return in Paris next Tuesday.
Florenzi and Verratti were both part of the Italian squad on the recent international break.
Champions League: PSG’s Marco Verratti to miss quarter-final against Bayern Munich after contracting COVID-19
Verratti will also miss PSG's top-of-the-table clash with Lille on Saturday, with the teams in first and second place and locked on 63 points.
Tuchel revealed that Verratti, along with fellow midfielder Idrissa Gana Gueye, had since been back in full training. However, first-choice goalkeeper Keylor Navas remains a doubt.
Ligue 1: Kylian Mbappe bags brace as Paris Saint-Germain ease past Monaco; Rennes stake claim to Champions League qualification
The sides drew 3-3 in Paris on Sunday night in arguably the season's most entertaining game, although this time Paris Saint-Germain kept Monaco's attack quiet and exposed one of the worst defences in the league
Leaders PSG have 33 points from 14 matches, five more than second-placed Olympique de Marseille who beat Brest 2-1 on Friday.
Euro 2020 Qualifiers: Brescia's Sandro Tonali replaces Paris Saint-Germain's Marco Verratti in Italy squad
Paris Saint-Germain midfielder Marco Verratti, AS Roma defender Leonardo Spinazzola and Sassuolo striker Domenico Berardi have all been ruled out of Italy's final Euro 2020 qualifiers, the country's football federation (FIGC) confirmed on Monday
Mauro Icardi scored his first Paris Saint-Germain goal as the French champions beat Galatasaray 1-0 to move four points clear at the top of their Champions League group on Tuesday.
Champions League: After Neymar's botched transfer and arrival of Mauro Icardi, can Paris-Saint Germain find glory in Europe?
When Real Madrid and Paris-Saint Germain last met in Europe two seasons ago, a PSG side missing an injured Neymar were dumped out in the last 16.
Paris Saint-Germain midfielder Marco Verratti said on Monday that Neymar had never told him he wanted to leave the club.
Euro 2020 qualifiers: Marco Verratti's late winner helps Italy pip Bosnia-Herzegovina; France, Germany notch thumping wins
Italy needed a late winner from Marco Verratti to defeat a determined Bosnia-Herzegovina while Germany and France piled up the goals in lopsided victories.
Coupe de France: Neymar admits he was wrong to punch fan after PSG's shock French Cup final loss to Rennes
Neymar accepted that he had made a mistake striking a fan who insulted Paris Saint-Germain players as they went to collect their French Cup losers' medals.
Ligue 1: Paris Saint-Germain hoping to finally secure title at fourth time of asking against Cesc Fabregas-less AS Monaco
It has turned into an epic limp towards the finish line, but Paris Saint-Germain will hope to finally secure the Ligue 1 title when they host Monaco.
Euro 2020 qualifiers: Fabio Quagliarella becomes oldest ever player to score for Italy in crushing victory over Liechtenstein
Fabio Quagliarella became the oldest ever player to score for Italy as the 36-year-old converted two penalties in a crushing 6-0 Euro 2020 qualifying win by the Azzurri over Liechtenstein on Tuesday.
Ligue 1: PSG beat Bordeaux, but Edinson Cavani's injury causes headache for team before Manchester United clash
Paris Saint-Germain coach Thomas Tuchel admitted he might need to resort to Plan D in the approaching Champions League showdown with Manchester United after Edinson Cavani sparked a new injury scare.
Champions League: Paris Saint-Germain's defeat against Lyon will please Ole Gunnar Solskjaer, reckons Thiago Silva
Paris St Germain’s first loss must have pleased United’s caretaker coach Ole Gunnar Solskjaer ahead of the clash between the teams, reckons Thiago Silva
Ligue 1: Paris Saint-Germain sign Argentine midfielder Leandro Paredes on a four-and-a-half-year deal
Paris Saint-Germain have completed the signing of Argentina midfielder Leandro Paredes on a four-and-a-half-year deal, the French champions announced on Tuesday.
Everton have turned down a bid from French champions Paris Saint-Germain for Senegalese midfielder Idrissa Gueye, said under-pressure manager Marco Silva
Champions League: Liverpool manager Jurgen Klopp relishing 'Anfield final' with Napoli after Paris Saint-Germain loss
Liverpool manager Jurgen Klopp remained positive despite seeing his side slip to a defeat at Paris Saint-Germain and labelled their winner-takes-all clash with Napoli an Anfield final.