Arsenal are lining up £59.6m offer to sign 27-year-old star - report

Arsenal are poised to sign a marquee centre-forward during the summer transfer window.The Gunners had a disappointing season in the Premier League. They finished 10 points behind champions Liverpool after playing out 14 draws.The lack of a genuine goalscoring striker cost them, and it appears the club are aiming to find a solution with Sporting CP star Viktor Gyokeres.According to Mais Futebol, Arsenal made an opening bid worth £46.8 million plus £8.5m in add-ons for the striker yest