Kleberson reckons Arsenal should do everything in their power to sign Bruno Guimaraes as a deal for Arthur Melo stalls.
The Gunners are struggling to come to an agreement with Juventus as big financial stumbling blocks have emerged.
Arsenal have offered to take the midfielder on loan for six months, but the Italians are pushing for an 18-month deal with an obligation to buy - something the Gunners are against committing to.