Walcott, though, maintains whichever 11 is sent out against Blackburn, they must produce the required display to keep Arsenal on course for Wembley.
"A lot of players are back from international duty and need a bit of a break, so some may be rested for the FA Cup game, but that's just as important as we want to go far in that competition," Walcott told the club's official website, arsenal.com
The Gunners battled to a 1-0 win at Sunderland, where fullback
The victory edged Arsenal up into fifth to stay within striking distance of arch-rival Tottenham Hotspur, which it faces at White Hart Lane in a fortnight.
Walcott feels his team has the strength of character needed to come through the challenges ahead.
"We are very confident [of finishing in the top four]. We can battle through any sort of situation," he said.
"The teams around us are winning as well, but we have just got to make sure we look after ourselves and try to win as often as we can.
"We will see where we are at the end of the season, but we have got to show the belief we did at Sunderland.
"I felt there were a lot of winners in that dressing room and the boys were fantastic."
Wilshere was withdrawn during the second half at Sunderland as a precaution and the England midfielder is expected to recover from a dead leg in time for the visit of Bayern.
Vermaelen, meanwhile, is understood to have been receiving injections to alleviate and ankle problem which has seen the Belgian miss the last two matches.
With Jenkinson suspended,
Arsenal, meanwhile, is reported to have sent a scout to watch
Wenger is known to be keen to bring in another defensive midfielder, having failed in a deadline-day move for Etienne Capoue of Toulouse.