Non Compete in CA

I have worked for a company's client worked for company's client for 2 yrs. Now I have got a job offer from client. but i have signed non compete with my company.
Can they sue me?

Here are the clauses
In the event of termination for any reason, you will not for a period of 12 months from the date of termination, directly or indirectly, provide service to any Client where you previously provided services to the Client on behalf of the us.

You acknowledge that We have spent considerable amount in developing the relationship with the Client and an attempt by you which results in a breach of the foregoing clause, will result in direct and foreseeable loss of business and damages to us. In the event of breach of the aforesaid paragraph, you will be liable to pay us, as liquidated damages, an amount equal to 40% of the your annual compensation payable by the Client.