The 22-year-old German will have a year left on his contract at Freiburg in the summer and is expected to move on from the club, with the side having been clear about the situation.
He is on the radar of Bundesliga giants in Bayern Munich and Borussia Dortmund and they are keen to secure a deal to sign him.
Schlotterbeck has also been a target for Newcastle, who want to take him to the Premier League in the summer.
But it has been claimed that the German is also one of the names on the shortlist of Tottenham football director Fabio Paratici.
Spurs have prioritised signing a left-sided centre-back in the summer and are assessing a number of options.
Schlotterbeck has been closely watched and the club are considering taking him to north London at the end of the season.
RB Leipzig’s Josko Gvardiol, Inter’s Alessandro Bastoni and Lille’s Sven Botman are some of the other defenders on Tottenham’s shortlist.
