A draw will be enough for last season's treble winners, five points clear at the top of Group E, to reach the last 16 for a 12th consecutive season and have Messi ready to start having come on as a substitute against Real on Saturday.
Messi had been out injured since the end of September but Barca have coped well without their talisman with strike partners Neymar and Luis Suarez in blistering form.

“Messi is a very important player and thank God he is back playing with us. His injury (knee ligament) was more serious than mine and he needed longer to recover but we all know how vital he is to the team," midfielder Ivan Rakitic who returned after a calf injury, told reporters.
Roma and Barca drew 1-1 in the Italian capital in September.

Latest News from Sports News Desk