Arsenal are interested in two Newcastle United stars this summer, but signing either player will be difficult despite their need to raise funds. Newcastle failed to qualify for Europe, having finished in fourth place last season, and they are struggling to fulfil profit and sustainability requirements. A big sale would give their finances a massive boost, and they certainly have assets of interest, with Mikel Arteta reportedly keen to bring midfielder Bruno Guimaraes or striker Alexander Isak to Arsenal. Both players were of interest to Arsenal before they moved to Newcastle, but they have sin…