Is CVS stock at 10% discount worth it?

As an employee I being offered CVS stock at 10% discount. How it works is, say I contribute 5% of my paycheck every month starting from July 1st till December 31st. I will get “X” amount of stocks at 10% off lowest stock either on the first or last day.
Example : lowest stock price either of July 1st or December 31st is $50. I’ll get all the shares at $45 on December 31st.
I can sell them on Jan 1st if I wish at the real market value.
Is it worth it? Looking at current situation I am not confident about CVS.
Thoughts?

Edit : There is no holding period to sell the stock.