Sunderland are in danger of getting relegated to the Championship.
The Black Cats are third from bottom in the league table at the moment with 26 points from 30 matches.
Newcastle United and Aston Villa are below Sam Allardyce’s side in the standings, while Norwich City and Crystal Palace are immediately above them.
Kirchhoff, who joined Sunderland from Bayern Munich in the January transfer window and can also play as a defensive midfielder, has suggested that not conceding goals will be key.
“The most important thing at the moment is to try and keep a clean sheet, so we have to stay focussed, be a little fitter and work hard in the next two weeks to ensure we’re more compact,” the German told Sunderland’s official website.
Sunderland are not scoring as many goals as they would like, but defensively if they are strong, then they will stand a chance of at least picking up a point from matches.
Recently results and performances for the Black Cats have been encouraging, and Allardyce will want his side to build on that after the international break.
The Black Cats will return to action next weekend when they take on West Bromwich Albion at the Stadium of Light in the Premier League.