Rory Lamont admits he had to quit Toulon after Scotland coach Andy Robinson warned a lack of match action could place his international career in jeopardy.
The 29-year-old - who has 26 caps - re-signed for Glasgow Warriors last week after negotiating his release from the French side.
"I spoke to him (Robinson) a short while after getting back from the World Cup and let him know my situation at Toulon. He told me I need to be playing rugby," said Lamont. "It planted the seed that if I couldn't play at Toulon, I had to see about getting loaned out or finding another club."
He continued: "I want to play in the Six Nations and I knew if I stayed at Toulon that was a definite no. I would not even be giving myself a chance."
Lamont added: "I came back from the World Cup and I wasn't even close to getting selected. It was clear that there would have to be three or four injuries for them to put me into the 22.
"I thought it would be best to offer them the chance to release me and eventually they agreed."
After sanctioning his release, Toulon accused Lamont of refusing to integrate with the rest of the squad.
He said: "I was happy they let me go. I wasn't happy with what they said in the process of letting me go, which was completely untrue and unfair.
"It really surprised me that they came out and said that. They've got their own place to look after and they've got to look after the team, and they've got an image to uphold.
"I suppose it doesn't look good when a senior player is leaving midway through the season. For me, it was just purely a rugby decision. I loved my team-mates and I got on with them really well - I just wasn't getting any game-time."