diff --git a/programs/mmm/src/instructions/cnft/cnft_deposit_sell.rs b/programs/mmm/src/instructions/cnft/cnft_deposit_sell.rs
new file mode 100644
index 0000000..237d02c
--- /dev/null
+++ b/programs/mmm/src/instructions/cnft/cnft_deposit_sell.rs
@@ -0,0 +1,77 @@
+use anchor_lang::{prelude::*, AnchorDeserialize, AnchorSerialize};
+
+use crate::{
+    constants::*,
+    errors::MMMErrorCode,
+    state::{Pool, SellState},
+    util::{check_allowlists_for_mint, log_pool},
+};
+
+#[derive(AnchorSerialize, AnchorDeserialize)]
+pub struct CnftDepositSellArgs {
+    pub asset_amount: u64,
+    pub allowlist_aux: Option<String>, // TODO: use it for future allowlist_aux
+}
+
+#[derive(Accounts)]
+#[instruction(args:CnftDepositSellArgs)]
+pub struct CnftDepositSell<'info> {
+    #[account(mut)]
+    pub owner: Signer<'info>,
+    #[account(constraint = owner.key() != cosigner.key() @ MMMErrorCode::InvalidCosigner)]
+    pub cosigner: Signer<'info>,
+    #[account(
+        mut,
+        seeds = [POOL_PREFIX.as_bytes(), owner.key().as_ref(), pool.uuid.as_ref()],
+        has_one = owner @ MMMErrorCode::InvalidOwner,
+        has_one = cosigner @ MMMErrorCode::InvalidCosigner,
+        bump
+    )]
+    pub pool: Box<Account<'info, Pool>>,
+
+    // TODO: Add CNFT specific accounts
+    pub sell_state: Account<'info, SellState>,
+    /// CHECK: will be used for allowlist checks
+    pub allowlist_aux_account: UncheckedAccount<'info>,
+    pub system_program: Program<'info, System>,
+    pub rent: Sysvar<'info, Rent>,
+}
+
+pub fn handler(ctx: Context<CnftDepositSell>, args: CnftDepositSellArgs) -> Result<()> {
+    let owner = &ctx.accounts.owner;
+    let pool = &mut ctx.accounts.pool;
+    let sell_state = &mut ctx.accounts.sell_state;
+
+    if pool.using_shared_escrow() {
+        return Err(MMMErrorCode::InvalidAccountState.into());
+    }
+
+    // Need to do check allowlist against cnft metadata args
+    // check_allowlists_for_mint(
+    //     &pool.allowlists,
+    //     asset_mint,
+    //     asset_metadata,
+    //     Some(asset_master_edition),
+    //     args.allowlist_aux,
+    // )?;
+
+    // Do Cnft transfer logic here
+
+    pool.sellside_asset_amount = pool
+        .sellside_asset_amount
+        .checked_add(args.asset_amount)
+        .ok_or(MMMErrorCode::NumericOverflow)?;
+
+    sell_state.pool = pool.key();
+    sell_state.pool_owner = owner.key();
+    // TODO: asset_mint can be get from tree.
+    // sell_state.asset_mint = asset_mint.key();
+    sell_state.cosigner_annotation = pool.cosigner_annotation;
+    sell_state.asset_amount = sell_state
+        .asset_amount
+        .checked_add(args.asset_amount)
+        .ok_or(MMMErrorCode::NumericOverflow)?;
+    log_pool("post_cnft_deposit_sell", pool)?;
+
+    Ok(())
+}
diff --git a/programs/mmm/src/instructions/cnft/mod.rs b/programs/mmm/src/instructions/cnft/mod.rs
new file mode 100644
index 0000000..3adb846
--- /dev/null
+++ b/programs/mmm/src/instructions/cnft/mod.rs
@@ -0,0 +1,3 @@
+pub mod cnft_deposit_sell;
+
+pub use cnft_deposit_sell::*;
\ No newline at end of file
diff --git a/programs/mmm/src/instructions/mod.rs b/programs/mmm/src/instructions/mod.rs
index a12cc04..f6157d7 100644
--- a/programs/mmm/src/instructions/mod.rs
+++ b/programs/mmm/src/instructions/mod.rs
@@ -6,6 +6,7 @@ pub mod mip1;
 pub mod mpl_core_asset;
 pub mod ocp;
 pub mod vanilla;
+pub mod cnft;
 
 pub use admin::*;
 pub use ext_vanilla::*;
@@ -13,6 +14,7 @@ pub use mip1::*;
 pub use mpl_core_asset::*;
 pub use ocp::*;
 pub use vanilla::*;
+pub use cnft::*;
 
 use anchor_lang::{prelude::*, AnchorDeserialize, AnchorSerialize};
 
diff --git a/programs/mmm/src/lib.rs b/programs/mmm/src/lib.rs
index f750238..3a9cc27 100644
--- a/programs/mmm/src/lib.rs
+++ b/programs/mmm/src/lib.rs
@@ -181,4 +181,11 @@ pub mod mmm {
     ) -> Result<()> {
         instructions::sol_mpl_core_fulfill_buy::handler(ctx, args)
     }
+
+    pub fn cnft_deposit_sell<'info>(
+        ctx: Context<'_, '_, '_, 'info, CnftDepositSell<'info>>,
+        args: CnftDepositSellArgs,
+    ) -> Result<()> {
+        instructions::cnft_deposit_sell::handler(ctx, args)
+    }
 }