The right-wing Christian Social Unionist (CSU) Mr Seehofer, 67, told Stern: “Basically, Schulz is the old SPD [Social Democrat], very old school: redistribution, redistribution, redistribution.”
He added: “This is not enough for us. The question must also be: How do we make our country viable? The goal cannot be that all are equal in the end – meaning equally poor.”
However the current Minister-President of Bavaria did not dismiss the former President of the European Parliament.
Horst Seehofer (R) with Angela Merkel
Mr Seehofer said: “Martin Schulz is not super-man – like none of us. But we must not underestimate him.”
He added: “We have to be wide awake. The SPD is enormously motivated and inspired by the change from Sigmar Gabriel to Martin Schulz.”
Regarding his own political future he declared that he had to still make up his mind despite saying two years ago that he would not run again in state elections.
Angela Merkel in pictures
Tue, November 29, 2016
Angela Merkel has served as German Chancellor since 2005 and Leader of the Christian Democratic Union since 2000. We take a look at her political career in pictures.
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German Chancellor Angela Merkel attends the gala for the 200th anniversary of Werner von Siemens on November 29, 2016 at the historic headquarters of Siemens in Berlin
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He declared: “A lot has changed in the meantime. The world has fallen to pieces: Russia, China, USA, Brexit, Turkey, Europe.”
He said that he was still “torn” over his political future but said he would wait two or three weeks to make his mind up.
Mr Seehofer has criticised Mrs Merkel’s open-door policy to immigrants, arguing that the country needed to impose an upper limit on the numbers arriving, which was seen by some as disrupting the ruling coalition between the CSU and the Christian Democrats (CDU).
SPD leader Martin Schulz
He said: “The upper limit becomes a central point in the election programme of the CSU. I stand for that.
“A promise is a promise. In the CSU, there is now a strong desire that a party convention should vote on a new coalition agreement.
Horst Seehofer meeting Russian President Vladimir Putin
“We want an upper limit, because only this way can the integration of those who can really remain succeed. We know about immigration in Bavaria.
“No one in Germany has a higher population growth, from eleven to almost 13 million. But these two million came over 25 years. This is the only way to make sense.”