The obvious alternative to Sami Khedira, in my opinion at least, is Germany team-mate Lars Bender, whom the Gunners were known to be courting last summer.
As shown below, the Bayer Leverkusen vice captain is a tackle machine:
And has developed an uncanny knack of scoring for his country, going on a run of three goals in six matches in 2013. Here’s one of his strikes against Ecuador…
The 25 year-old would certainly bring something different to Arsenal’s midfield:
He ranks pretty well against Arsenal’s other known defensive midfield targets too:
And recent speculation suggests the Gunners are already planning a swoop for Bender: