Glasgow Rangers have been linked with a summer move for the Portuguese veteran.
Glasgow Rangers take on Celtic in the Scottish Cup semi-final in a game which will see Bates looking to make his fourth appearance for the Ibrox side.
David Bates has started in Ibrox side Glasgow Rangers' last three matches.
Myles Beerman and David Bates look set to start for Rangers against Celtic on Sunday.
The Glasgow Rangers defender has looked good so far but will have to be at his best to help overcome Celtic on Sunday.
Ibrox side Glasgow Rangers look set to stick by their young players on Sunday, when they take on Brendan Rodgers' Celtic side.
Rangers' Rob Kiernan was linked with Fulham in January - and his future may be even more uncertain with David Bates starring in his absence.
Glasgow Rangers picked up a good 2-0 win against Partick Thistle at Ibrox.
Glasgow Rangers duo David Bates and Myles Beerman have impressed former Ibrox star Barry Ferguson.
David Bates was brought to Ibrox during Weir's time as Glasgow Rangers assistant boss.