Manchester United's CristianoRonaldo(File Photo)Photo Gallery>>>LISBON, March 27 (Xinhua) -- Manchester United's Cristiano Ronaldo is likely to miss Wednesday's Euro 2008 qualifier against Serbia in Belgrade due to a sprain in training on Tuesday.

The Portuguese sensation picked up the injury in the final minutes of training at the Red Star Belgrade stadium, according to a Portuguese Football Federation spokesman.

Ronaldo scored twice to help Portugal to a 4-0 win in Saturday's European qualifier against Belgium in Lisbon.

Portugal are now third in Group A, three points behind leaders Poland, with the top two teams qualifying for the Euro 2008 finals.