The Roma boss is determined to keep the Italy international at the Stadio Olimpico, despite frequent rumours of a move to the Premier League
The Giallorossi midfielder endured a difficult 2012-13 campaign, with former coach Zdenek Zeman falling out with the player, leading to his exclusion from the first XI.
However, the Frenchman, who moved to the Italian capital from Lille in June, is eager to ensure the 29-year-old stays put.
"He is a great player and surely it's better to have him with us than to see him leave," he told reporters.
Both Pablo Osvaldo and Marquinhos have been linked wtih moves away from the Olimpico this summer, with the latter attracting attention from Barcelona, but Garcia says there is no update on their futures.
"He added: They are still with us, we would like to keep the best players. But if they were to leave, we will replace them."
Roma finished a disappointing sixth place in Serie A last season, failing to qualify for the Europa League.