BBC Sport https://www.bbc.co.uk/sport/football/64394375 https://ichef.bbci.co.uk/live-experience/cps/240/cpsprodpb/E35B/production/_128430285_quiz-index-imagery-cant-show-face-sports--110b66e2-9596-42ca-99f7-0d0cd09b33b2.png As the transfer window heads to its close, can you name 25 of the most expensive January signings in the Premier League?