It has been well documented that we are after a centre back. Mourinho was clearly in the market for one in the summer, but unfortunately, we couldn't get a deal over the line. Now, most people, including myself, agree that our defence is not at the standard it should be, especially if we're looking to challenge for major competitions. Having said that, what is so different from Mourinho's last couple of years to now? Our defensive stats in the last couple of years are as follows: 2016/17 Clean sheets - 17 Goals conceded - 29 Goals conceded per match - 0.76 Saves - 85 Tackles - 690 Tackle success % - 71% Blocked shots - 154 Interceptions - 584 Clearances - 1,112 Headed Clearance - 572 Aerial Battles/Duels Won - 2,766 Errors leading to goal - 3 Own goals - 1 Spoiler: Link https://www.premierleague.com/clubs/12/Manchester-United/stats?se=54 2017/18 Clean sheets - 19 Goals conceded - 28 Goals conceded per match - 0.74 Saves - 118 Tackles - 564 Tackle success % - 65% Blocked shots - 168 Interceptions - 481 Clearances - 853 Headed Clearance - 436 Aerial Battles/Duels Won - 2,699 Errors leading to goal - 4 Own goals - 2 Spoiler: Link https://www.premierleague.com/clubs/12/Manchester-United/stats?se=79 As I said, our defence does need upgrading, however, the above stats are pretty good and we were up there with the so called 'better' defences in the Premier League, keeping the most clean sheets last season (19) and joint first with Spurs season 16/17 (17). This season, our stats after 10 games are as follows: 18/19 (after 10 games) Goals conceded - 17 Goals conceded per match - 1.70 Clean sheets - 1 16/17 (after 10 games) Goals conceded - 12 Goals conceded per match - 1.20 Clean sheets - 4 17/18 (after 10 games) Goals conceded - 4 Goals conceded per match - 0.4 Clean sheets - 8 So as you can see, we made a better start defensively after 10 games in our last couple of seasons, especially in 17/18 season. My question is, what is so different this season that we are leaking more goals than we did in the last couple of seasons under Mourinho? Formation change We played a 4231 for the majority of the time in the last couple of seasons. It is well documented that this is Jose's favoured formation, and a formation he knows how to set up defensively in. De Gea He's been a major reason as to why we've not conceded so much in the past. With De Gea having, for his standards, quite a poor world cup, some say he's still finding form. Could an in form De Gea have made a difference this season to the goals we've conceded? Matic Was showing signs last season that he wasn't quite up to the pace of the game. Seemed sluggish and has carried into this season. Luck Have we just been lucky over the last couple of years and is our lack of quality starting to show? Lack of confidence Can't be nice being a centre back at United. Not only seeing the media saying they're not good enough, but the manager too. What do we think it is? Thoughts?