These days Manchester United's 'rondo' drill is very different to what it looked like when Jose Mourinho at the helm.
A video showing the difference between the standard of the drill under Mourinho, compared to Ole Gunnar Solskjaer - and it really is quite a contrast.
The clip from when Mourinho was in charge, taken when United were on tour in the United States, sees United players seriously struggle to put five passes together.
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The regularity during which the two men in the middle defending the ball changes because of sloppy passes is quite ridiculous.
But fast forward to the present day and Solskjaer's United have come on leaps and bounds in terms of this training drill.
They move the ball at a quick tempo with one-touch passing and are able to pass the ball about under pressure in tight spaces with relative ease.
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There's two different groups of players taking part in the rondo, many of which we see in the very first video, but you'd think we are watching a completely different team given the monumental difference.
Fans will get a clearer insight into the difference between United under their last two managers tonight as Solskjaer takes his side to play against Mourinho, the man he replaced, at the Tottenham Hotspur Stadium.
As far as rondos go though, nothing will ever compare to Barcelona's. Before the Champions League final against United at Wembley in 2011, Pep Guardiola's side blew everyone away with their sensational warm-up routine.
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Barca would put on a masterful performance in a 3-1 defeat over United and it prompted Sir Alex Ferguson to call Guardiola's Barça side "the best team I have faced."
Topics: Football News, Jose Mourinho, Football, Manchester United, Ole Gunnar Solskjaer