Tottenham manager Ange Postecoglou has made a number of signings since joining the club and Chris Sutton has questioned one of those. Postecoglou saw his team lose their fourth game on the bounce this weekend as Liverpool scored another four goals past Spurs. The Tottenham boss has admitted in the last week that he needs to change things in the summer and there is an expectancy that players will be signed. Of course, Postecoglou has been backed already with big money signings such as Brennan Johnson, Micky van de Ven, Radu Dragusin and goalkeeper, Vicario. And while all of those signings have …