Damage to Kitchen Worktop

My tenant has damaged a fairly new kitchen worktop. It looks like somebody has been cutting on the surface with a knife so there’s all tiny cut marks and a small chip.
He didn’t tell me about it but came up on a mid term inspection.
I approached him and he admits the damage but doesn’t want the hassle of replacing the worktop as it involves removing the sink, hob and upstairs. He’s asked if it can be deducted from the deposit if he ever moves out.
I’ve explained that would be to fine but what if there’s any other damage to be take out of the deposit.
What do landlords normally do in this situation?

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Tenant Obligations

Landlords may impose reasonable obligations on the tenant that affect their behaviour (including anti-social behaviour) and their visitors through the tenancy agreement. In addition, occupiers of HMOs have specified legal obligations under the Management of HMO regulations referred to above, and every occupier mus

Deposits and Tenancy Deposit Schemes

Many landlords take a deposit from tenants to hold for the duration of the tenancy. When the tenant moves out, this is returned to the tenant less any deductions permitted: typically for damage (above fair wear and tear), additional cleaning, and cover any outstanding rent. Note: deposits can only be withheld if stipulated what the deposit is being held against in the contract.