It had been rumoured over the weekend the Switzerland international was on his way to the San Siro, but neither club were willing to comment on the speculation.
However, we can confirm that the 23-year-old is at Milanello undergoing medical tests.
Milan would not say whether they are looking to take Senderos on a loan deal or sign him permanently.
Senderos joined Arsenal from Servette in 2003 and became a regular member of Arsene Wenger's back four.