A large chunk of Fati's 31 appearances across all competitions this season have come from the bench.
In fact, of his 20 appearances in La Liga, only seven of those have been starts.
The 20-year-old has contributed six goals and four assists this season but has had to play second fiddle to Ousmane Dembele, Raphinha and Gavi for much of the campaign.
Premier League trio Arsenal, Liverpool and Manchester United have all been linked with summer moves for Fati this week but ahead of Sunday's La Liga encounter against Villarreal, Xavi has reiterated that the Spain international remains a signature part of the furniture at the Camp Nou.
"We expect a lot from him, I have blind confidence in him," Xavi said.
"I have it with everyone. We have been shaping the squad based on what I wanted.
"I have confidence with everyone and especially with Ansu. He is a player for the present and for the future. He has to have patience and give everything when he comes in, which he is doing.
"At this moment there is no one transferable. The market has finished, I don't know what we are doing talking about sales, we are playing the season.
"We are talking about the sale of Ansu, who was not talked about all month in January. I don't understand it and even less in the Barcelona environment. I have a lot of hope for him."
