"I've been particularly happy with how the team have been performing at the back. There's a good understanding between the players, whoever's been playing there. I think we deserve to be top of the league because we don't concede many goals."
Silvestre, who's hoping to play a major role in United's bid for silverware, confirmed he emerged unscathed from his first outing in the senior squad for almost seven months.
"Physically I felt quite good [against Roma]," he said. "Even the day after I was fine.
"Walking out of the tunnel before the game was very special and I was really looking forward to getting back on the pitch.
"It's always a pleasure to come back from injuries, especially in front of a full house on a European night.
"I enjoyed the match from the first minute until the last."