But Alonso is now hopeful that he can make an earlier return than expected.
Alonso said: "It is difficult to say at this moment when I will be able to play again. Everything is going well and I am staying optimistic. Thankfully there was no ligament damage as well. The bone had broken and I had some slight cartilage damage and that is why it is taking a little more time to heal.
"Things are going well and day by day I am improving and getting stronger. The ankle is feeling much better. Hopefully it will be before the end of the season.
"I am able to walk more or less without crutches. I still have to use them for some things but I feel more comfortable now. I don't know when I can start running again, I will have to speak to the doctor about that," Alonso added.