Arsenal look set to strengthen their attack in the summer transfer window, and are keeping a close eye on several players across Europe. Pedro Neto and Michael Olise have been touted as targets, but given their poor injury records and expensive price tags, Arsenal may be better off looking elsewhere. Athletic Bilbao winger Nico Williams is a player that has emerged as someone Arsenal could target in recent months, and given that he has a £43m release clause in the summer, he would come at a much lower cost than both Neto and Olise. However, there may now be a problem, as rivals Tottenham Hotsp…