The Royals are to improve their £2million offer for Watford's versatile defender Mariappa.
The Premier League new boys had their first bid for Mapps, 25, rejected but boss Brian McDermott will be back in this week.
Tribal Football Staff are dedicated to the football tribes from all over the world. Our team is passionate about delivering football news to our hundreds of thousands of followers in all the corners of the globe. Football is life, It never stops, Neither do we.