Feb 7 (Reuters) - BZ WBK:
* The Polish unit of Banco Santander, BZ WBK, says it plans to issue subordinated bonds in Poland worth up to 1 billion zlotys ($296.55 million)
* Bank says it plans to issue the bonds until June 30, 2018
* The bonds may be issued all at once or in several tranches, BZ WBK says Source text for Eikon: Further company coverage: ($1 = 3.3721 zlotys) (Reporting by the Warsaw Newsroom, editing by Louise Heavens)
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