Former British number one Greg Rusedski is planning a comeback at the age of 35 after almost two years in retirement.
Rusedski is believed to be asking for wildcards into several ATP tournaments next month to get back into contention.
But he will not be considered for Britain's Davis Cup team for their next match against Ukraine in March.
"We talked about it and I thought about it and I called him up the next day and told him this was not the right time," GB captain John Lloyd told BBC Sport.
"I thanked him for desperately wanting to do it but I felt it was the time to move on with younger players."
Since retiring from tennis in April 2007, Rusedski has taken up a role at the Lawn Tennis Association to help identify and develop talented youngsters.
The Canadian-born former US Open finalist had dismissed rumours of a Davis Cup comeback in September.
But while Rusedski is said to be disappointed over his snub, Lloyd offered the big-serving left-hander encouraging signs for future Davis Cup matches.
"If he was still willing to play tournaments and play enough matches then maybe we could talk again," said Lloyd.
"You know what you're going to get with Greg, someone who's going to fight 110% for every point."
on the plus side, at least it means us Brits won't have to listen to him commentate
Seriously though, it's a bold move. Good luck Greg