Borussia Dortmund midfielder Reinier has tested positive for coronavirus, the German club have announced.

The 18-year-old, who joined Dortmund on a two-year loan deal from Real Madrid in August, underwent PCR tests for COVID-19 upon his return from international duty with Brazil Under-23s last week.

Reinier was not part of Dortmund's squad for their Bundesliga win over Hertha Berlin at the weekend and no other BVB players have tested positive.

Dortmund confirmed the news on Monday, a day before their Champions League match with Club Brugge, and added that the teenager is asymptomatic and is now self-isolating.

Borussia Dortmund player, Reinier, has tested positive for COVID-19 and is symptom free.

We wish him a healthy and speedy recovery pic.twitter.com/xmEG6tzcu7

— Borussia Dortmund (@BlackYellow) November 23, 2020

He has been used seven times by Lucien Favre, each of those appearances coming from the bench.

Reinier, who won the Campeonato Brasileiro and Copa Libertadores with Flamengo in 2019, has yet to score, assist or create a chance in his three Bundesliga outings and has managed just one shot.

Tuesday's meeting with Brugge is the first of three home games in a row for Dortmund, with Cologne and Lazio to come in the next nine days.