And United have reacted by working in conjunction with their supporters as well as the Football Association and Uefa in an effort to ensure the second leg of their Champions League quarter-final passes off peacefully.
Marouane Fellaini is the only player to score for United at home in the Champions League this season and Solskjaer has warned his frontline they need to improve. "We have to defend well but we need that little bit of extra to score".
"People have said to me it has to be our year - that it's 20 years ago [since I scored the winner], that I used to play with No. 20, back at Camp Nou, but we have to deserve it". Barcelona at Nou Camp is a hard prospect, but the memory from that night will live with the players.
Nemanja Matic and former Barça player Alexis Sanchez are back from injury and ready to play.
"That's the 100 million dollar question in football, who can score the goals", the Norwegian said.
A report in Sport claims that Chelsea want to sign the 26-year-old and replace the Real Madrid-bound Eden Hazard, as long as the Blues aren't banned from signing players. "Let's hope he ends the season great for us".
Fire breaks out at Notre-Dame Cathedral in Paris
Macron's pre-recorded speech was set to be aired later Monday on French TV. "I ask everyone to respect the security perimeter". The cathedral, which was built in 1160, is engulfed in flames and firefighters are struggling to contain the massive fire.
Manchester United are now in Barcelona.
The Red Devils were criticised by some for their cautious approach to playing Barcelona in the first leg and Solskjaer is hoping for a better performance this time out. In the 93rd minute, if we get a set-piece, we are taller and bigger than them.
To make matters worse Barca have not lost a European tie at home for 30 games. "Maybe he's more likely for the Barcelona game".
Luke Shaw has travelled with his team-mates despite the full-back being suspended for the Nou Camp clash after being cautioned against the LaLiga champions last week. However, they have won just one of their past five away knockout stage games in the competition (D2 L2).
Sanchez was handed a contract worth 500,000-a-week, but has proved to be one of the most expensive failures in the club's history.
However, United manager Ole Gunnar Solskjaer may turn to him after his side failed to muster a shot on target in the 1-0 defeat at Old Trafford in last week's first leg.