The Argentine has not featured for the Catalan giants since making his return from a hamstring strain in the 1-1 draw with Paris Saint-Germain on April 10.
The Argentine star made his early return from a hamstring strain as a substitute in the Blaugrana's 1-1 draw with Paris Saint-Germain on April 10 that sealed the club's place among the final four, but he was not risked in the subsequent Liga clashes with Zaragoza and Levante.
Barca has now confirmed that its talisman is in contention for a recall against Die Roten.
"Leo Messi took a full part in training on Sunday morning and although he has not yet been declared match fit by club doctors, he has been included in the squad to face Bayern in Munich," a statement on Barcelona's official website read.
The Liga leader also revealed Javier Mascherano and Carles Puyol will both miss the clash against the Bavarians through injury, but reserve team goalkeeper Oier has been included in the travelling party.