The on loan forward is set to feature for Barcelona in his first El Clasico on Sunday afternoon.
Marcus Rashford was spotted watching his phone after landing in Madrid
Rashford is set to play in his first El Clasico
Rashford, 27, will be hoping for success with Real Madrid sitting just two points ahead of Barca in the LaLiga title race.
He and his team-mates flew into the Spanish capital tonight ahead of the clash at the Santiago Bernabeu.
Rashford could be seen leaving the plan in his club tracksuit with his hood up.
He was also visibly on his phone watching what appeared to be a football match.
And fans were convinced that he was keeping an eye on the Red Devils.
One posted: "Marcus Rashford was spotted watching Manchester United's game as he was travelling for El Clasico."
A second wrote: "He will always be one of us."
A third commented: "Still a Mancunian."
A fourth said: "He's still United through and through."
Another added: "Once a red, always a red."
If it had indeed been the action at Old Trafford then Rashford would have watched a thrilling game.
Ruben Amorim's side charged into a 3-0 lead thanks to goals from Matheus Cunha, Casemiro and Bryan Mbeumo.
The Seagulls fought back into the tie as Danny Welbeck and Charalampos Kostoulas made it 3-2 with minutes left.
But a spectacular comeback was dashed as Mbeumo netted his brace in the dying seconds.
The result made it three wins on the bounce for Amorim – his most successful run since being appointed.
The three points have lifted the Red Devils into the top four and the Champions League places.
Meanwhile, Rashford recently received a vote of confidence from Barca boss Hansi Flick after the win over Olympiacos in the Champions League.
The German said: "For me, Rashford is performing very well and is an important player for the team.
"He won a penalty, which I thought was a penalty, and scored two goals.
"He's very fast, combines very well, and as he gains confidence, he will become more important."
Rashford has also revealed he would like to remain at the LaLiga giants beyond his loan spell.
The club have the option to make his move permanent for £26.2million.
SunSport has also exclusively revealed that he could be joined at the club by former United team-mate Mason Greenwood.
Should the attacker also make the move to Barca from Marseille then United would be in line for a cash windfall due to a sell-on clause in his deal.
