What greets the visitors? Our side, large team, working to receive committee (7,3)

'what greets the visitors?' is the definition.

'our side large team working to receive committee' is the wordplay.
'our side' becomes 'we'.
'large' becomes 'l'.
'working' indicates anagramming the letters.
'to receive' means one lot of letters goes inside another.
'committee' becomes 'com' (abbreviation for committee).
'team' is an anagram of 'emat'.
'emat' placed around 'com' is 'comemat'.
'we'+'l'+'comemat'='WELCOME MAT'