Rashford has been performing well for Barcelona, scoring his first two Champions League goals against Newcastle and creating a goal in each of his last four La Liga matches.
The England international is on a loan deal with Barcelona, with an option to buy him for around €30M at the end of the season.
In a recent interview, Deco discussed what he believes makes Barcelona a good fit for Rashford.
"He's on a simple loan with no penalty clause, and if we decide to keep him, we have the option to buy him," Deco said.
Deco also acknowledged that Rashford's performance has been impressive, bringing the level of quality the team was hoping for.
However, he also mentioned that Rashford's experience at Manchester United was complicated due to the frequent changes in coaches and high expectations placed on him.
Deco emphasized that the focus is currently on the upcoming games, and a decision about Rashford's future will be made later.
Recent injuries to Lamine Yamal and Raphinha have given Rashford more playing time under manager Hansi Flick, allowing him to solidify his position in the team.