"Happy to train with the team again. It felt really good!" Pique said on his official Twitter account on Monday.
The Spain international has been out of action with a foot injury since Barca's 3-2 win over Spartak Moscow [ Images ] seven weeks ago and his replacements have struggled at times.
He was named in Tito Vilanova's [ Images ] squad for the clash at the Scottish champions but Adriano Correia and Carles Puyol [ Images ] are out injured, while Sergio Busquets [ Images ] is suspended.
Group leaders Barca are five points above second-placed Celtic after three wins out of three and are close to securing last 16 qualification.
Photograph: Gonzalo Arroyo Moreno/Getty Images