The best and worst Manchester United signings since Alex Ferguson retired in 2013

Swipe left/right on your browser to see the hits, flops and those the jury is still out on

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Manchester United bowed out of the Champions League to Barcelona 4-0 on aggregate on Tuesday night, leaving only a top-four finish in the Premier League as the club's remaining aim for the season.

Ole Gunnar Solskjaer's side are currently sixth, two points behind fourth-placed Arsenal.

While elimination at the hands Barcelona is by no means an embarrassment, too many players have reverted to their previously underwhelming personas after a mid-season mini-revival under Ole Gunnar Solskjaer. Too many were second best in all areas across 180 minutes to Lionel Messi and co.

Recruitment will be essential this summer if Solskjaer is to restore United as a force both at home and in Europe next season.

The Norwegian, who was named United's permanent manager in March after a hugely impressive spell as caretaker, will do well to look back on the club's signings since Alex Ferguson stepped down as manager in 2013 to see the type of player United should avoid signing.

David Moyes, Louis van Gaal and Jose Mourinho have all occupied the hottest of hot seats in English football. Too many of their signings have failed to catch fire.

Scroll through the gallery above to see the hits and flops, and any United signings in the post-Ferguson era the jury is still out on.