Six big transfers that could go through inside 48 hours: Arsenal and Chelsea departures included

We pick out six deals that appear imminent, after the transfer window officially reopened yesterday.

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Tomas Kalas (Chelsea to Middlesbrough)

Chelsea central defender Tomas Kalas is currently on a season long loan spell with Bundesliga outfit FC Cologne, but a lack of game time has meant that the Czech Republic international is set to return to Stamford Bridge this week. He looks all set to head back out on loan to Middlesbrough, linking up with teammates Patrick Bamford and Kenneth Omeruo on Teesside.