His Italian is pretty awful.
To get back on topic, the issue the OP will have is not with instruction per se, as I'm pretty sure most Dutch FI are at ICAO Level 5 or above.
What he will definitely have problems with is actually taking the exams, especially the written ones. I'm not personally aware of any country where you can take such tests in any language other than those officially recognized by that country's government.
For example, in Switzerland you can pick either Italian, German or French, but English is still a no go as it's not recognized as an official language in the Swiss constitution. The best way would be to do the PPL in the UK, but apart from the logistics it remains to be seen whether the UK CAA will let you go that route on a non-resident basis.
Ciao,
DG800