Garin, 18, is considered a top prospect for Chile. He was 16 years old when he won his first ATP match at Vina del Mar in 2013. He is now ranked No. 346.
Chilean newspaper La Tercera reported that Gonzalez and Garin have agreed to work together this season. Ranked as high as No. 5, Gonzalez retired in 2012 but has enjoyed his return to the circuit as Giraldo's coach in May.
"When I used to play I said I would never do it because I traveled too much and I played too much and I pushed my body to the limit. But now I’m really happy I’m working with Santiago Giraldo," he told Sport360 at Wimbledon.
Gonzalez initially agreed to work with Giraldo for 10 weeks a year, to which he will now add coaching duties with Garin.