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According to NME, the band's frontman told Rolling Stone Indonesia that the songs will only be made available if he is happy with them.
Anderson said: "I wouldn't want to make another record that I look back on and regretted again.
"Whether anyone else hears what we've been writing recently isn't set in stone. Unless it turns out to be outstanding, then no-one will ever hear it."
The singer-songwriter previously admitted that he regretted Suede's final studio release, 2002's A New Morning.
Suede this month confirmed details of the comprehensive reissues of their five albums in 2xCD+DVD editions featuring B-sides, demos and live songs in addition to rare, unreleased tracks and videos.
They play the first three albums - Suede, Dog Man Star and Coming Up - over three nights at London's O2 Academy Brixton in May.
