As Arsenal agreed on a deal which could eventually earn them £7.5 million last summer, that brought down the curtain on a transfer tale three years in the making. And the wait, for his new employers, has most certainly been worth it. At the beginning of the new season, there would have been long odds indeed on a player who spent last season nursing injuries on loan at Nottingham Forest blossoming into Europe’s most creative full-back. But, with five in five games, no one in Europe’s major leagues has more assists to his name than Lazio’s Arsenal loanee Nuno Tavares. Lazio have a £7.5 million o…