Union bosses have warned that no level of cuts to social care would be “safe or palatable” amid reports of planned budget savings in Glasgow.

Reports suggest that proposals have been drawn up to cut £22m from the social care budget in Glasgow, including £3.5 million from care home places and £3 million from the self-direct social care budget, based on a leaked document seen by the Daily Record.

The cuts could also see the closure of a specialist service to support children living with someone with addiction issues to save £600,000, and cuts to drug rehab funding.

Read more: Glasgow SNP leader tells Holyrood colleagues to end budget meddling

Glasgow has been at the centre of Scotland’s drug deaths crisis in recent years, consistently recording the highest number of deaths of any council area in the country.

The document said the cutting of rehab funding would have an impact on the recovery of people suffering from addiction issues.

“This… will decrease our capacity to offer residential rehab step-down services when the city is struggling with drug-related deaths,” the newspaper reported.

Chris Sermanni, the social work convener in Glasgow for trade union Unison, said: “These proposed cuts are the real consequence of slashing tens of millions of pounds from the social work budget.

“The reality is there are no ‘safe’ or ‘palatable’ cuts.

“Any reduction in funding has a significant impact on the delivery of key services in Glasgow.

Read more: Scottish Government to 'recoup' money from councils in teacher row

“Social work services in the city are at crisis point as it stands, and implementing these cuts would be catastrophic.

“Glasgow needs more money, and our local politicians should be fighting for this, not timidly passing on austerity handed down from Holyrood and Westminster.”

Scottish Conservative social care spokesperson, Craig Hoy, said: “These plans expose the brutal reality of the SNP-Green government’s savage cuts to local authority budgets year after year.

“Our most vulnerable people are set to pay the price despite social care services are already being overwhelmed and drug deaths being Scotland’s national shame under the SNP.

“Slashing millions more from the social care budget as well as reducing funding for drug rehab beds will have absolutely devastating consequences.

Read more: John Swinney warns 'minor' spending pledges could be delayed by budget

“SNP-Green ministers are once again passing the buck to councils and ensuring they are the ones having to make these almost unthinkable spending decisions.

“They should be delivering a fair funding deal for our local authorities to ensure that our most vulnerable people can be protected and that Scotland’s shameful record drug rate can finally be reduced.”

A spokesman for the city’s integration joint board – which oversees health and social care – said: “As part of the annual budget-setting process, a cross-party group of councillors works with officers from across the council family to scrutinise and develop options on where savings and investment could be considered.

“The integration joint board will set a budget for the health and social care partnership in the months ahead and it is too early to say what options will be included.”

The report comes as councils look to set their budgets amid a wrangle between local authorities and the Scottish Government.

Ministers have said funding for councils will increase by £570 million in cash terms next year, but local authority body Cosla has said this drops to just £71 million when ring-fenced funding set aside for Government priorities is taken into account.

Last month, reports suggested Glasgow City Council could cut as many as 700 teaching roles to save money, but Education Secretary Shirley-Anne Somerville this week announced a move to stop such cuts, with councils told they would risk having to pay back the money earmarked for teachers to the Scottish Government if not spent for that purpose.