Liverpool have been given a Champions League boost with captain Jordan Henderson declared fit to take on Atletico Madrid at Anfield. The England midfielder has been out since injuring a hamstring in the first leg of the last-16 contest three weeks ago but trained on Sunday and Monday and is available to take his place in the squad. Left-back Andy Robertson returns after sitting out Saturday's win over Bournemouth as a precaution but goalkeeper Alisson Becker will miss this match, and Monday's derby against Everton, with a hip injury. The La Liga side hold a one-goal advantage going into the match on Merseyside thanks to Saul Niguez's early strike at the Wanda Metropolitano last month. Reds manager Jurgen Klopp substituted Sadio Mane at half-time in the Spanish capital, concerned that Atletico’s players were trying to get his Senegal striker sent-off. “We spoke about that already but we will probably mention it again,” the German said. "In a similar situation in the second game I probably wouldn’t do the same, but in the first game it is not over in that moment. We are 1-0 down, yes, but with 10 players you have much less of a chance to fight back. "We expect a really experienced performance from Atletico, let me say that. In all different departments experienced, but we have to deal with that.”