Barcelona are in town. The Catalan giants will take on Celtic in the Champions League on Wednesday evening with Luis Enrique intent on tightening their grip on top spot in the group.

Of course, this is a fixture that conjures happy memories for Celtic fans despite September's 7-0 humbling at the Camp Nou. One wonders if Tony Watt will be watching.

After days of build up the game is now upon us, with Barcelona and their squad of superstars training at Celtic Park on Tuesday night.

Here's what the Spanish newspapers are saying ahead of the Champions League group game.

The holding midfielder hasn't been his usual self this season. Sergio Busquets is normally one of the first names on the team sheet for both club and country, but he needs to up his game.

It could be why Barcelona are reportedly looking at Sevilla's anchoring midfielder Steven N'Zonzi, who has been excellent for Jorge Sampaoli this season. Will the real Busquets stand up against Celtic?

Lionel Messi missed Barcelona's goalless draw at home to Malaga on Saturday through illness with the Argentinean reported to be suffering from a particularly turbulent flight home after international duty.

Enrique hinted Messi should make Wednesday night's game against Celtic despite his recent struggles.

The Barcelona boss addressed a whole host of questions and issues at his pre-match media conference on Tuesday. From Neymar's goalscoring troubles, to the atmosphere expected at Celtic Park for the game, Enrique gave his opinion.

We've all been there before. You've packed your bags, you've patted down your pockets and yet somehow you still manage to leave something behind. That's what Andre Gomes all did on Tuesday, leaving his passport on the team bus.

Stop Messi and you stop Barcelona. It shouldn't be that easy given the talent they have all over the pitch but in recent weeks this has been the case.

As demonstrated by the weekend's goalless draw against Malaga, when Barca struggled without their playmaker and goalscorer in-chief, there is hope for Celtic if they can get a grip of the number ten.

A few people have tried and failed in that, though.