EXCLUSIVE from Graeme BaileyAmid interest from Arsenal, Manchester City and Paris Saint Germain, Bruno Guimaraes’ Newcastle United future is far from certain – at least until the end of June. Guimaraes has a £100m release-clause active until the end of next month, a clause included in the new contract the Brazilian signed last year to make him the club’s highest paid player. And in a summer in which another Newcastle star, Alexander Isak, is also attracting interest, the club’s resolve could be tested. That being said, TBR Football understands that Newcastle have now confirmed to Guimaraes’ re…