I would say that you can't do either things.
You must build French Squadrons. You are playing with France not as Ottoman.
Besides you don't control that port. The Ottoman does.
A space that is controlled by a major or minor power is a controlled
space. Controlled spaces for a power include:
• Home spaces that have not fallen to another power.
• Independent (gray) spaces seized by the power.
• Home spaces of other powers seized by the power.
• Home spaces of allied minor powers.
Not playable by Protestant. Add 2 new squadrons in any controlled home port (or 1 squadron in each of two home ports). Ottoman may choose to substitute 2 corsairs for each naval squadron.