Bruno Guimaraes has told Newcastle he wants to join Arsenal – but his club will only engage if contacted by the Premier League champions.Daily Mail Sport revealed on June 25 that the Magpies were braced for an offer from the Gunners after leading agents were instructed to explore the Brazilian’s options.A verbal offer via an intermediary was dismissed, but we understand further discussions around numbers have now taken place. Sources say this is Arsenal’s second offer.However, Newcastle sporting director Ross Wilson will not consider any approach until it is made official. There is astonishment inside St James’ Park that Arsenal transfer chief Andrea Berta has not made contact, despite their interest in the 28-year-old. Newcastle captain Bruno Guimaraes has asked to leave the club amid interest from ArsenalWe have been told that intermediaries believe a fee of around £75m could see progress, now that Guimaraes has communicated his wish to leave, but Newcastle are determined to keep their captain. He has two years to run on his contract but Newcastle have an option to extend by 12 months, offering them some protection.Mikel Arteta is keen to strengthen his midfield ahead of the club’s title defence and they have identified Guimaraes, who has been on duty at the World Cup, as their main target. After five seasons on Tyneside, he wants a new challenge.Newcastle will be keen to avoid a drawn-out saga, like Alexander Isak last summer, and the onus is now on Arsenal to make an official offer.How much is David Beckham set to pocket from his World Cup brand deals? Take on our quiz in our newsletter HERE