Arsenal do not seem very active in the winter transfer window but reports suggest that they are planning to seriously reinforce their squad next summer.
Currently, the Gunners are fourth in the table, eight points behind league leaders Chelsea and must strengthen their team this month to have any chance of winning the title.
Nevertheless, reports in the Italian media (Corriere della Sera) claim that Arsenal are ready to launch the assault and sign Kostas Manolas next summer with United also keen.
Kostas is arguably the best defender in the Serie A and therefore Roma would not like to lose him. As far as Arsenal are concerned, their central defense is strong at the moment with Koscielny and Mustafi as the first choice pair.
On the other hand, they have players like Paulista and Mertesacker to provide cover as well. However, Per is past his best, Gabriel is just okay and Holding is inexperienced. In such a scenario, Wenger must splash the cash to strengthen the back line.