To withdraw funds from the Polygon network to Coinbase, follow these steps:

1. Log in to your Coinbase account and navigate to the "Deposit" section.
2. Select "Polygon" as the network and copy the deposit address provided.
3. In your Polygon wallet, select the option to withdraw funds and paste the deposit address from Coinbase.
4. Enter the amount of funds you wish to withdraw and confirm the transaction.
5. Wait for the transaction to be processed and for the funds to appear in your Coinbase account.

Please note that there may be network fees associated with this transaction. Make sure to check the fees before proceeding with the withdrawal.