Rangers express interest in South African duo
Defender Khumalo, 23, and striker Mphela, 24, who both scored against France in the finals, would cost the Ibrox club 3m in total.
It emerged today that club chief executive Martin Bain has held talks with the player's representatives.
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Hide Ad"We are seriously considering both these players," Smith told the Scottish Sun.
"I believe they could fit in well for us.
"Contact has been made, but we'll need to wait and see what happens in the coming weeks."
Supersport United defender Khumalo, capped 14 times, is also attracting the interest of Premiership side Tottenham.
Former Strasbourg striker Mphela, who has 35 caps, was the Premier Soccer League's top scorer last season with 17 goals in 30 games for Mahelodi Sundowns.