Bayern Munich stumbled to a 0-0 draw against Shakhtar Donetsk in the Champions League on Tuesday night, but had midfielder Xabi Alonso sent off for two bookable offences.
Pep Guardiola's men will be favourites to win the second leg back at the Allianz Arena, but will need to break Shakhtar down and find the back of the net.
Polish international striker Robert Lewandowski will be somewhat relied upon for goals, even though he has only scored 11 goals in 29 games for Bayern since his summer move from Borussia Dortmund.
The 26-year-old hasn't quite lived up to expectations since joining Bayern on a free transfer, and former Liverpool midfielder Dietmar Hamann told Sky Sports that Manchester United should be looking to snap him up.
"If you look at Manchester United, I think they could do with a Lewandowski," Hamann said. "At the moment United, Liverpool and even Arsenal... Lewandowski is tailor-made for them."
"He came to Bayern Munich on a free last year but if there was an opportunity to get him out I’d break the bank for him because I think he’s the best number nine in the world," he added.
Lewandowski scored a staggering 103 goals in 185 games for Borussia Dortmund, but hasn't got close to that strike rate at Bayern, and he's even been used out wide by Guardiola at times.
Meanwhile, United are struggling in attack. Robin van Persie looks like a shadow of the player who fired United to the title in the 2012/13 season, Wayne Rooney has been playing in midfield, whilst Radamel Falcao is struggling to make an impact - as seen by his latest disappointing display, this time against Preston in the FA Cup on Monday.
United need some pace in their front line, but Lewandowski wouldn't really add that. If van Persie or Falcao were to depart at the end of the season, then he would make sense as a big addition - but Louis van Gaal needs some speed to rely on in the final third.