Multiple reliable new sources are reporting that Vallecano have submitted a concrete bid for Marash Kumbulla. The defender remains under contract at Roma, but the opening offer has opened the door for discussions between the two clubs - though it is unclear at this stage whether the current bid will be enough to tempt them to part with a prized asset. Vallecano have laid out their intentions, but valuation and timing remain under debate. Elche, Levante and Mallorca are keeping tabs in case talks collapse or progress slows further. Defensively, Vallecano are sitting around the league average this season, at 1.28 goals conceded per game. Someone like Marash Kumbulla could keep them steady but also raise the level when it matters most. Roma have recently been linked with Santiago Thomas Castro, Antonio Nusa and Julian Brandt while Vallecano have had no rumoured targets. Stay tuned for more details as the story develops. Need more Vallecano transfer rumours? Follow @PlayerSwitchCom on Twitter for news and updates as they happen.