Arsenal are in direct talks with Newcastle United to sign captain Bruno Guimaraes. The clubs are understood to be in formal discussions regarding the midfielder, with previous discussions being done through intermediaries. BBC Sport previously reported that Arsenal would need to increase a £70m bid they made through intermediaries last month. One source at Newcastle has since said the club have rejected an offer from Arsenal. Although Arsenal have failed with an unspecified offer - neither side has disclosed the amount - it is expected they will return with an improved bid.