Pep Guardiola accepts Sergio Aguero's four-match domestic ban and reveals he will rotate his team against Celtic.
Luis Enrique admitted a win against Borussia Monchengladbach could help solve Barcelona's recent problems.
Jerome Boateng has suffered a fresh injury setback and will miss Bayern Munich's final Champions League Group D game against Atletico Madrid.
Lionel Messi will start Tuesday's Champions League game against Borussia Monchengladbach.
UCL Group B is set for a tense final round, with Benfica, Napoli and Besiktas still in with a chance of topping the group.