MILAN, Oct 25 (Reuters) - Tod's investors representing just 4.5% of the Italian luxury shoemaker's capital have tendered their shares under a buyout bid launched by the founders, leaving the Della Valle family just one day to get to the targeted threshold.

To proceed with the proposed delisting of Tod's and make their revamp plans easier, the Della Valle need to reach a 90% ownership threshold.

The Della Valles control 64.5% of Tod's and can count on the support of French luxury giant LVMH, which has said it would retain its 10% stake in the Italian group.

Italian bourse data on Monday showed take-up had reached 17.84% of the shares targeted by the offer, or 4.56% of the group's capital.

That means they need another 10% of the company's capital to hit their goal. The takeover offer ends at 1530 GMT on Tuesday.

In such bids, the last two or three days are normally decisive for the outcome because investors wait until the very end to tender their shares.

Tod's founder and chairman Diego Della Valle and his brother Andrea are offering to buy out other investors in Tod's at 40 euros a share, for an up to 338 million euro investment. (Reporting by Elisa Anzolin; editing by Valentina Za)