Leeds United are set to complete the signing of Ao Tanaka from German side Fortuna Dusseldorf on deadline day and Graham Smyth has shared what he’s heard in a late-night update. The 25-year-old has long been linked with a move to Leeds and with The Whites desperate to bring in some midfield depth before the deadline, Leeds have agreed a deal to sign Tanaka for a fee of £3.4m. A 27-time Japan star, Tanaka has entered the final 12 months of his contract at Dusseldorf who failed to gain promotion to Germany’s top tier last season, falling at the final hurdle like Leeds in the play-offs. The sales…