Welcome to the Q&A Forum

Hi Raul, 'Deal of the day' ecommerce models rely heavily on email, social, and paid search, and not so much SEO. SEO is a slow play, so I wouldn't put too much energy into planning SEO efforts around this. That being said, a noindex tag is going to be sufficient in preventing the deal of the day section of the site from hurting other aspects of your site (if there are any), you don't need to worry about putting a canonical tag on that product detail page since you're not indexing it. Hope that helps!