The Gunners have wasted no time in making their move as the Italian publication claims that Arsenal have now agreed a fee in the region of £22m to sign Leno while personal terms have also been agreed with the player.
As noted in the report, both Napoli and Atletico Madrid have been linked with a move for the Germany worldwide, but Arsenal appear poised to win the race for his signature.
It is believed that Leverkusen are willing to accept less than Leno's £24.6million release clause, but want around £19.4million plus bonuses for the six-time Germany worldwide. Despite being only 26-years-old, he has amassed an impressive 289 Bundesliga appearances and is rated as one of the top young 'keepers in European football.
New Arsenal boss Unai Emery is continuing his overhaul of the Gunners squad, and is said to be looking to bring Sampdoria midfielder Lucas Torreira to the London club this summer, much to the delight of Arsenal fans.
Arsenal were tracking Adli as early as March, when a source close to PSG revealed that Manchester City, Barcelona and Bayern Munich were also keen, but he was expected to sign professional terms in Paris until Emery's departure was confirmed. However, based on his recent displays in Germany it's not an acquisition that's going to strike fear into the rest of the Premier League.