Championship Cardiff City have offered refunds to about 70 of their 16,000 season ticket holders who oppose changing the team's shirts from blue to red, reports BBC News<.i>.
The move to alter the shirts, which includes a new dragon crest, was confirmed as part of "major and significant" investment last month.
BBC Wales understands that disgruntled fans have 10 days to confirm whether they want a refund.
A Cardiff spokesman said: "The club in this process does not want to lose even one season ticket holder, but we understand it's an emotive issue that for some there's no turning back.
"These letters are the next step in that process."