Arsenal have sanctioned the £10m departure of Matt Turner to Nottingham Forest, as they edge closer to a deal with Brentford for the goalkeeper David Raya. Brentford made clear they want £40m for the Spain international but Arsenal are close to reaching a compromise for a player with less than 12 months on his contract. Arsenal have a longstanding interest in Raya and Iñaki Caña, their goalkeeping coach, worked closely with the 27-year-old at Brentford. Bayern Munich expressed interest in Raya but failed to agree a deal. Turner, the USA No 1, is a welcome arrival for Forest, who maintain an interest in signing Dean Henderson from Manchester United. At Arsenal, Raya would provide competition for the England goalkeeper Aaron Ramsdale. Last season Forest loaned Henderson and Keylor Navas from Manchester United and Paris Saint-Germain respectively but both have returned to their parent clubs. Forest are expected to pay about £7m up front for Turner, plus £3m in add-ons. He made seven appearances for Arsenal last season and could make his debut against his former club at the Emirates Stadium on Saturday. Ainsley Maitland-Niles, whose Arsenal contract expired in June, has signed for Lyon on a four-year deal.