Napoli's supporters react at San Paolo stadium in Naples in September Two more Bayern Munich fans were injured in attacks in Naples on Tuesday ahead of the Champions League clash between the Germans and hosts Napoli, Italian news agency Ansa reported .
A 36-year-old man was stabbed in the knee close to the San Paolo stadium before being taken to the nearby hospital of the same name.
It is said he will need to stay in hospital for a few days.
In the second attack, also close to the stadium, the fan was only lightly hurt.
These acts of violence by neapolitan thugs followed on from another attack on Monday night.
Two men, aged 42 and 47, suffered slight injuries and were taken to the Loreto Mare hospital in the city.
According to witnesses, the men were walking along a road heading towards the main square in the city Piazza Garibaldi when some men on a pair of motorbikes pulled up alongside them and stabbed them in the shoulders with knives.
It is not the first time this kind of attack has happened in Naples, or even in Italy.
Last year several Liverpool fans were stabbed the night before a Europa League tie in this city while Rome has also had a history of such violence ahead of Champions League games, notably against visiting English teams but also a Real Madrid fan was stabbed in the thigh a few years a go.