No 2nd Response From This Professor

<p>I got a reply from a professor from UCLA that he has a "very good possibility" research position for me for the summer. So I emailed him back answering what weeks I can work for him. However, its been five days and he is not answering me back.</p>

<p>The major problem is that I got another positive response from a UCI professor 3 days ago, and I haven't answered him back yet because I was waiting for the UCLA professor to answer me back. I want to email the UCLA professor and I want to ask him when I can know FOR SURE if he DOES have a position for me, not just a "very good possibility". But yet, I do not want to sound rude or impatient. How should I email him?</p>

<p>And since I'm waiting for the UCLA professor to answer me, Im worried that I might lose my position at UCI cuz I haven't been able to answer the UCI professor yet. Or should I tell the UCI professor that i can work for him (just in case i dont get a position at UCLA) and back out later? Or is this unethical? What should I do? </p>

<p>I definately want to email the UCLA prof. again, but I dont know in what kind of tone or what to ask him... </p>

<p>Any suggestions? Thanks</p>

<p>I say you take the UCI position, at least you might be guaranteed a spot.</p>

<p>bump, anyone else?</p>

<p>email UCLA prof again, this time saying u have a pending offer from UCI, but that ur preference would be to work with him (UCLA). but due to UCI, u need to hear back from UCLA asap. e.g. 48 hours, and that if u don't hear back from him, u'll have no choice but take the position at UCI.</p>