Shalulile has been in fine form this season, netting 12 Absa Premiership goals as the Lions of the North sit in the top eight with six games to go.
The Namibian international has been rated amongst the most expensive local players in terms of market value by Highlands co-director Larry Brockstone, who placed a R30-million price tag on the forward's head.
Kaftel says even though his club holds Shalulile in the highest regard, they won't stand in his way if the player gets a good offer, locally or overseas.
"We haven't had interest that we can look at, but if there is the right offer and it's good, we have to consider it," Kaftel tells KickOff.com.
"I think the best thing for Peter is to send him overseas and get an international club. Peter is very special to us and has been with us for years now. He is top goalscorer, amazing guy and an amazing player.
"Right now we have to finish the season, that's our priority. We have six games to go. Once we finish the season, we will assess the options and we will see.
"For any of our players, if other clubs come after one of our players and if it is the right thing, we must look at it. We must consider them as well. Peter is like an adopted son. He is an amazing guy, we love him, he works hard. He is keen to improve and he gives 100 percent effort on the field."
Dennis Lota (Zambia) – The late 'Chesa Mpama' scored 74 goals in his PSL career and still holds the record for the most goals scored in a single season at Orlando Pirates (23).
Jean-Marc Ithier (Mauritius) - He was 34 when he came to the PSL and still reached double figures in each of his first five seasons, scoring 71 goals in total for Santos.
Wilfred Mugeyi (Zimbabwe) - 'Silver Fox' top-scored with 23 goals in the 1996/97 season and scored 91 times in the PSL era. He scored 113 for Bush Bucks including pre-96 goals.
Benjani Mwaruwari (Zimbabwe) - Another EPL success, he scored 20 goals in 45 starts for Jomo Cosmos, then 21 goals for Chippa United and Wits despite being beyond 34 by then.
Knowledge Musona (Zimbabwe) - Came to SA at a young age and made a huge impact. 'Silent Assassin' is still a legend after scoring 44 goals in 74 matches over two spells at Chiefs.
Collins Mbesuma (Zambia) - The only foreigner who has played for all of Chiefs, Sundowns and Pirates. 'Ntofontofo' has banged in 103 goals in PSL competitions and is still going.
Peter Ndlovu (Zimbabwe) - The Warriors legend became a cult hero in England and came to the PSL when he was past his prime in 2004 but still scored 31 goals in 65 starts for Downs.
Chris Katongo (Zambia) – Another one Jomo Sono got right, he netted 38 goals in 85 starts for Cosmos, Arrows and Wits and in 2006/07 top-scored (15) despite playing half-a-season.
Manuel Bucuane (Mozambique) - Spotted by Jomo Sono, 'Tico-Tico' scored 106 goals in 276 starts including pre-PSL era for Jomo Cosmos, SuperSport, Pirates and Maritzburg.
Raphael Chukwu (Nigeria) - Chukwu's 63 goals in 124 starts for Mamelodi Sundowns made a huge impact in the club winning three league titles between 1998 and 2000.