I assume that your previous employer has told you those ARE your only options? Another option that typically applies is that you leave the money in the old employers scheme and become a 'deferred pensioner' of their scheme. This may be attractive if the scheme is good. Some pension trustees put limits on this - for example, the valuable civil service pension scheme will not allow it unless you had at least 2 years continuous service. You may want to explore this option.
Secondly, you cannot automatically assume that you can transfer into the new employers scheme - the new company trustees may not allow it. And if it is a 'defined contributions scheme' (as most are nowadays) there is no particular reason to transfer anyway.
You should be able to put it into your own private pension pot, if you are not allowed to keep it in the old company scheme.
This does not constitute advice - just a couple of options to look at. You may need to pay for professional advice.