The La Liga champions are ensuring that they are fully prepared in the event that their propsed deal for Antoine Griezmann falls through.
The Catalan giants have already had their fingers burned once by the World Cup winner and are wary of a repeat scenario this summer.
Barca fear the possibility that the deal could be hijacked by either Paris St-Germain or Bayern Munich, unlike last year where he signed a new contract at Atletico Madrid.
So although Griezmann’s £105m switch may appear to be in the bag, Barca are keeping their options open.
Nou Camp chiefs are prepared to splash serious cash in the wake of the club’s shock Champions League exit at the hands of Liverpool.
Lionel Messi was reportedly furious with the club’s 4-0 Anfield humiliation and has demanded summer reinforcements.
Mundo Deportivo report that Rashford, Aubameyang and Lacazette are now on the La Liga’s champions hit-list due to one shared asset.
Each Premier League front man is highly versatile and can comfortably operate anywhere along the forward line.
Rashford has just 12 months remaining on his contract and little progress has been made on a new deal to keep him at Old Trafford.
The 21-year-old is a born-and-raised Mancunian, but a Nou Camp move could prove tempting.
The report states that Barcelona admire Rashford’s electric pace and he could prove to be the perfect foil for Messi.
But they have also been impressed with Arsenal duo Pierre-Emerick Aubameyang and Alexandre Lacazette.
The pair have a close relationship on and off the pitch, but both only have time for one more big move in their careers.
Arsenal would fight to keep both players but are in financial difficulties and would find it tough to turn down a mega-money offer.
Lacazette spoke on rumours linking him with a move to the Catalan giants earlier this week.
Speaking to Telefoot, Lacazette simply replied: “It is flattering.”