In the case of tips which constitute wages, subsection (a) shall be applicable only to such tips as are included in a written statement furnished to the employer pursuant to section 6053(a), and only to the extent that collection can be made by the employer, at or after the time such statement is so furnished and before the close of the 10th day following the calendar month (or, if paragraph (3) applies, the 30th day following the year) in which the tips were deemed paid, by deducting the amount of the tax from such wages of the employee (excluding tips, but including funds turned over by the employee to the employer pursuant to paragraph (2)) as are under control of the employer.