As a left armer David Wainwright would be behind Monty, but he is a better fielder and batsman - not such great bowling stats though, and not at a fashionable county.
and he is a similar type of bowler to Keedy and Kerrigan - the type who sort of walk up and put it there, which tends to be an issue when you get to test match wickets.
Short term, they'll go with Panesar or play seven batsmen with the seventh being Ali - this might allow them to have a look at him in the Sri Lanka tests, where the four seamers will do most of the work.
Longer term, Rafiq is probably the best bet, though I would love to see one of Rashid or Borthwick on their bowling to give us a wrist spin option.