This week's Extra really is a bonus - it's a history special! In an era where deadline day can seem like the ONLY DAY THAT HAS EVER MATTERED, Matt and especially Nik decided to take an extra long view of the transfer window and look back at how German football's Wechselbörse has changed down the years, and how the game has changed along with it. Look out for a nifty little history intro ditty along the way too.