nope, the change is insufficient to pull off a succesfull rbf. Even if he uses all change, the fee would only be bumped to ~3-4 sat/byte, which is insufficient at the moment.

@OP: i've had a rather busy day today, so i haven't answered you (yet), if nobody else explains how to do a CPFP by tomorrow, i'll try to schedule some time to make a small walktrough and post it in this thread