Sqauring of option when the rate is fluctuating

i hold an option of a security 10or 20 lot or more and optoin rate is fluctuating between 30 to 100 or more very rapidly can i place a squre of order of entire quantity less than market price say 98 if market price is showing 100 .will it create any problem like no of bid quantty not available for buying etc

If the price is fluctuating and if one selects to square off at market price then it can trade at any price.But if one mention a price and does square off it will go as a limit order and trade accordingly based on current market price.

If the price is fluctuating rapidly then it is a best practice to put a limit price and trade.