Brown had been set to captain Scotland for the Six Nations campaign this year before injury ruled him out and he revealed at the weekend that the three-Test series would also come too soon for him.
Brown, talking at the Melrose Sevens, where his Saracens side lifted the trophy, said: “I phoned and spoke with Andy [Robinson] last week and said it’s going to be too soon [to tour]. It’s a shame because I’m desperate to get back – I absolutely love playing for Scotland and it feels like I have not done that for a really long time. Having said that, I am using the time off well. I’m working hard and I’m determined to come back even stronger and fitter.
“I’m not going to put a date on it but I would hope to be back by the start of next season.”
“I’ve been training hard and as soon as I got the chance, I knew I would love to come up to Melrose with a team – and it’s been great.”