Tottenham were one of nine clubs in the Premier League to strengthen in the January transfer window, with hopes of ending the season strong. After a month where few teams were able to do meaningful business, Ange Postecoglou appeared content with his moves. Spurs added Timo Werner early in the window on a loan deal from RB Leipzig for the rest of the campaign. Should the former Chelsea striker impress, there is claimed to be a permanent option in the range of £15million for the summer. While that looked to solidify the forward ranks, there was a desire to strengthen at the back too. With an ey…