There is some speculation at the moment about whether or not Marussia will be running Luiz Razia or not this year. It is fairly clear that while there is a contract in place, the Brazilian and his supporters needs to fulfil certain financial clauses, in order for him to be able to race the car this season. In other words, they have to come up with the cash. Obviously there are some problems given that Max Chilton has done almost all of the testing to date and looks likely to do the same in the final test in Barcelona.
This does not mean that Razia is out, but it does mean that the team must keep looking out for who is available, and what money they might be able to bring to the party. Having said that the team owners could always decide that it would be a good idea to get a more experienced driver in the car in order to guarantee more development and perhaps better results and so speculating about the available pay-drivers is not necessarily the thing to do. Marussia knows that the fight for 10th place this year is going to be tough and that the winner will take all. Thus, it is perhaps better to get someone good, with some experience and some money.
There is some talk of Narain Karthikeyan having some cash from Tata, which would be popular over at the Formula One group, which would like to see an Indian driver. It might also help Marussia get a deal for this year to help them with the funding. However, the powers-that-be might also like to see the team take on Vitaly Petrov, in order to develop the Russian market, in the run-up to the first Russian GP in 2014. There are still the likes of Bruno Senna, who might be available, and he would presumably be able to get out of his Aston Martin contract if an F1 drive were to come up. There has also been speculation that Marussia might pick up Jules Bianchi if he is not part of the package at Force India, although this does not seem very likely given the fact that McLaren might be a little touchy about a Ferrari driver getting access to its simulator.
At the moment, however, it is all speculation and the drive is still Razia’s. It is for him to lose.